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f25d0cf3 | 1 | /* |
81f71381 | 2 | * Copyright (c) 2008-2017, 2019-2020 Nicira, Inc. |
f25d0cf3 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
b2befd5b BP |
18 | |
19 | #include <sys/types.h> | |
d787ad39 JS |
20 | #include <netinet/in.h> |
21 | ||
f25d0cf3 BP |
22 | #include "bundle.h" |
23 | #include "byte-order.h" | |
b1c5bf1f | 24 | #include "colors.h" |
f25d0cf3 | 25 | #include "compiler.h" |
d4abaff5 | 26 | #include "dummy.h" |
ee89ea7b | 27 | #include "openvswitch/hmap.h" |
f25d0cf3 | 28 | #include "learn.h" |
f25d0cf3 BP |
29 | #include "multipath.h" |
30 | #include "nx-match.h" | |
9ac0aada | 31 | #include "odp-netlink.h" |
b598f214 BW |
32 | #include "openvswitch/dynamic-string.h" |
33 | #include "openvswitch/meta-flow.h" | |
34 | #include "openvswitch/ofp-actions.h" | |
0d71302e | 35 | #include "openvswitch/ofp-packet.h" |
b598f214 | 36 | #include "openvswitch/ofp-parse.h" |
0d71302e | 37 | #include "openvswitch/ofp-port.h" |
66bd43fa | 38 | #include "openvswitch/ofp-prop.h" |
0d71302e | 39 | #include "openvswitch/ofp-table.h" |
64c96779 | 40 | #include "openvswitch/ofpbuf.h" |
b598f214 | 41 | #include "openvswitch/vlog.h" |
c2d936a4 | 42 | #include "unaligned.h" |
cb22974d | 43 | #include "util.h" |
aafee638 | 44 | #include "vl-mff-map.h" |
f25d0cf3 BP |
45 | |
46 | VLOG_DEFINE_THIS_MODULE(ofp_actions); | |
47 | ||
48 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
f25d0cf3 | 49 | |
c2d936a4 BP |
50 | struct ofp_action_header; |
51 | ||
aad28f47 BP |
52 | /* Header for Open vSwitch and ONF vendor extension actions. |
53 | * | |
54 | * This is the entire header for a few Open vSwitch vendor extension actions, | |
55 | * the ones that either have no arguments or for which variable-length | |
56 | * arguments follow the header. | |
57 | * | |
58 | * This cannot be used as an entirely generic vendor extension action header, | |
59 | * because OpenFlow does not specify the location or size of the action | |
60 | * subtype; it just happens that ONF extensions and Nicira extensions share | |
61 | * this format. */ | |
62 | struct ext_action_header { | |
63 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
64 | ovs_be16 len; /* At least 16. */ | |
65 | ovs_be32 vendor; /* NX_VENDOR_ID or ONF_VENDOR_ID. */ | |
66 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
67 | uint8_t pad[6]; | |
68 | }; | |
69 | OFP_ASSERT(sizeof(struct ext_action_header) == 16); | |
70 | ||
c2d936a4 BP |
71 | /* Raw identifiers for OpenFlow actions. |
72 | * | |
73 | * Decoding and encoding OpenFlow actions across multiple versions is difficult | |
74 | * to do in a clean, consistent way. This enumeration lays out all of the | |
75 | * forms of actions that Open vSwitch supports. | |
76 | * | |
77 | * The comments here must follow a stylized form because the | |
78 | * "extract-ofp-actions" program parses them at build time to generate data | |
79 | * tables. | |
80 | * | |
81 | * - The first part of each comment specifies the vendor, OpenFlow versions, | |
82 | * and type for each protocol that supports the action: | |
83 | * | |
84 | * # The vendor is OF for standard OpenFlow actions, NX for Nicira | |
85 | * extension actions. (Support for other vendors can be added, but | |
86 | * it can't be done just based on a vendor ID definition alone | |
87 | * because OpenFlow doesn't define a standard way to specify a | |
88 | * subtype for vendor actions, so other vendors might do it different | |
89 | * from Nicira.) | |
90 | * | |
91 | * # The version can specify a specific OpenFlow version, a version | |
92 | * range delimited by "-", or an open-ended range with "+". | |
93 | * | |
94 | * # The type, in parentheses, is the action type number (for standard | |
95 | * OpenFlow actions) or subtype (for vendor extension actions). | |
96 | * | |
97 | * # Optionally one may add "is deprecated" followed by a | |
98 | * human-readable reason in parentheses (which will be used in log | |
99 | * messages), if a particular action should no longer be used. | |
100 | * | |
101 | * Multiple such specifications may be separated by commas. | |
102 | * | |
103 | * - The second part describes the action's wire format. It may be: | |
104 | * | |
105 | * # "struct <name>": The struct fully specifies the wire format. The | |
106 | * action is exactly the size of the struct. (Thus, the struct must | |
107 | * be an exact multiple of 8 bytes in size.) | |
108 | * | |
109 | * # "struct <name>, ...": The struct specifies the beginning of the | |
110 | * wire format. An instance of the action is either the struct's | |
111 | * exact size, or a multiple of 8 bytes longer. | |
112 | * | |
113 | * # "uint<N>_t" or "ovs_be<N>": The action consists of a (standard or | |
114 | * vendor extension) header, followed by 0 or more pad bytes to align | |
115 | * to a multiple of <N> bits, followed by an argument of the given | |
116 | * type, followed by 0 or more pad bytes to bring the total action up | |
117 | * to a multiple of 8 bytes. | |
118 | * | |
119 | * # "void": The action is just a (standard or vendor extension) | |
120 | * header. | |
121 | * | |
04f48a68 YHW |
122 | * # Optionally, one may add "VLMFF" in the end of the second part if |
123 | * the Openflow action may use a variable length meta-flow field | |
124 | * (i.e. tun_metadata). Adding "VLMFF" will pass the per-switch based | |
125 | * variable length meta-flow field mapping map (struct vl_mff_map) to | |
126 | * the corresponding action decoding function. | |
127 | * | |
c2d936a4 BP |
128 | * - Optional additional text enclosed in square brackets is commentary for |
129 | * the human reader. | |
130 | */ | |
131 | enum ofp_raw_action_type { | |
132 | /* ## ----------------- ## */ | |
133 | /* ## Standard actions. ## */ | |
134 | /* ## ----------------- ## */ | |
135 | ||
136 | /* OF1.0(0): struct ofp10_action_output. */ | |
137 | OFPAT_RAW10_OUTPUT, | |
138 | /* OF1.1+(0): struct ofp11_action_output. */ | |
139 | OFPAT_RAW11_OUTPUT, | |
140 | ||
141 | /* OF1.0(1): uint16_t. */ | |
142 | OFPAT_RAW10_SET_VLAN_VID, | |
143 | /* OF1.0(2): uint8_t. */ | |
144 | OFPAT_RAW10_SET_VLAN_PCP, | |
145 | ||
146 | /* OF1.1(1), OF1.2+(1) is deprecated (use Set-Field): uint16_t. | |
147 | * | |
148 | * [Semantics differ slightly between the 1.0 and 1.1 versions of the VLAN | |
149 | * modification actions: the 1.0 versions push a VLAN header if none is | |
150 | * present, but the 1.1 versions do not. That is the only reason that we | |
151 | * distinguish their raw action types.] */ | |
152 | OFPAT_RAW11_SET_VLAN_VID, | |
153 | /* OF1.1(2), OF1.2+(2) is deprecated (use Set-Field): uint8_t. */ | |
154 | OFPAT_RAW11_SET_VLAN_PCP, | |
155 | ||
156 | /* OF1.1+(17): ovs_be16. | |
157 | * | |
158 | * [The argument is the Ethertype, e.g. ETH_TYPE_VLAN_8021Q, not the VID or | |
159 | * TCI.] */ | |
160 | OFPAT_RAW11_PUSH_VLAN, | |
161 | ||
162 | /* OF1.0(3): void. */ | |
163 | OFPAT_RAW10_STRIP_VLAN, | |
164 | /* OF1.1+(18): void. */ | |
165 | OFPAT_RAW11_POP_VLAN, | |
166 | ||
167 | /* OF1.0(4), OF1.1(3), OF1.2+(3) is deprecated (use Set-Field): struct | |
168 | * ofp_action_dl_addr. */ | |
169 | OFPAT_RAW_SET_DL_SRC, | |
170 | ||
171 | /* OF1.0(5), OF1.1(4), OF1.2+(4) is deprecated (use Set-Field): struct | |
172 | * ofp_action_dl_addr. */ | |
173 | OFPAT_RAW_SET_DL_DST, | |
174 | ||
175 | /* OF1.0(6), OF1.1(5), OF1.2+(5) is deprecated (use Set-Field): | |
176 | * ovs_be32. */ | |
177 | OFPAT_RAW_SET_NW_SRC, | |
178 | ||
179 | /* OF1.0(7), OF1.1(6), OF1.2+(6) is deprecated (use Set-Field): | |
180 | * ovs_be32. */ | |
181 | OFPAT_RAW_SET_NW_DST, | |
182 | ||
183 | /* OF1.0(8), OF1.1(7), OF1.2+(7) is deprecated (use Set-Field): uint8_t. */ | |
184 | OFPAT_RAW_SET_NW_TOS, | |
185 | ||
186 | /* OF1.1(8), OF1.2+(8) is deprecated (use Set-Field): uint8_t. */ | |
187 | OFPAT_RAW11_SET_NW_ECN, | |
188 | ||
189 | /* OF1.0(9), OF1.1(9), OF1.2+(9) is deprecated (use Set-Field): | |
190 | * ovs_be16. */ | |
191 | OFPAT_RAW_SET_TP_SRC, | |
192 | ||
193 | /* OF1.0(10), OF1.1(10), OF1.2+(10) is deprecated (use Set-Field): | |
194 | * ovs_be16. */ | |
195 | OFPAT_RAW_SET_TP_DST, | |
196 | ||
197 | /* OF1.0(11): struct ofp10_action_enqueue. */ | |
198 | OFPAT_RAW10_ENQUEUE, | |
199 | ||
200 | /* NX1.0(30), OF1.1(13), OF1.2+(13) is deprecated (use Set-Field): | |
201 | * ovs_be32. */ | |
202 | OFPAT_RAW_SET_MPLS_LABEL, | |
203 | ||
204 | /* NX1.0(31), OF1.1(14), OF1.2+(14) is deprecated (use Set-Field): | |
205 | * uint8_t. */ | |
206 | OFPAT_RAW_SET_MPLS_TC, | |
207 | ||
208 | /* NX1.0(25), OF1.1(15), OF1.2+(15) is deprecated (use Set-Field): | |
209 | * uint8_t. */ | |
210 | OFPAT_RAW_SET_MPLS_TTL, | |
211 | ||
212 | /* NX1.0(26), OF1.1+(16): void. */ | |
213 | OFPAT_RAW_DEC_MPLS_TTL, | |
214 | ||
215 | /* NX1.0(23), OF1.1+(19): ovs_be16. | |
216 | * | |
217 | * [The argument is the Ethertype, e.g. ETH_TYPE_MPLS, not the label.] */ | |
218 | OFPAT_RAW_PUSH_MPLS, | |
219 | ||
220 | /* NX1.0(24), OF1.1+(20): ovs_be16. | |
221 | * | |
222 | * [The argument is the Ethertype, e.g. ETH_TYPE_IPV4 if at BoS or | |
223 | * ETH_TYPE_MPLS otherwise, not the label.] */ | |
224 | OFPAT_RAW_POP_MPLS, | |
225 | ||
226 | /* NX1.0(4), OF1.1+(21): uint32_t. */ | |
227 | OFPAT_RAW_SET_QUEUE, | |
228 | ||
88c8ca26 BP |
229 | /* NX1.0(40), OF1.1+(22): uint32_t. */ |
230 | OFPAT_RAW_GROUP, | |
c2d936a4 BP |
231 | |
232 | /* OF1.1+(23): uint8_t. */ | |
233 | OFPAT_RAW11_SET_NW_TTL, | |
234 | ||
235 | /* NX1.0(18), OF1.1+(24): void. */ | |
236 | OFPAT_RAW_DEC_NW_TTL, | |
237 | /* NX1.0+(21): struct nx_action_cnt_ids, ... */ | |
238 | NXAST_RAW_DEC_TTL_CNT_IDS, | |
239 | ||
04f48a68 | 240 | /* OF1.2-1.4(25): struct ofp12_action_set_field, ... VLMFF */ |
c2d936a4 | 241 | OFPAT_RAW12_SET_FIELD, |
04f48a68 | 242 | /* OF1.5+(25): struct ofp12_action_set_field, ... VLMFF */ |
7eb4b1f1 | 243 | OFPAT_RAW15_SET_FIELD, |
04f48a68 | 244 | /* NX1.0-1.4(7): struct nx_action_reg_load. VLMFF |
7eb4b1f1 BP |
245 | * |
246 | * [In OpenFlow 1.5, set_field is a superset of reg_load functionality, so | |
247 | * we drop reg_load.] */ | |
c2d936a4 | 248 | NXAST_RAW_REG_LOAD, |
04f48a68 | 249 | /* NX1.0-1.4(33): struct ext_action_header, ... VLMFF |
bad8a439 BP |
250 | * |
251 | * [In OpenFlow 1.5, set_field is a superset of reg_load2 functionality, so | |
252 | * we drop reg_load2.] */ | |
253 | NXAST_RAW_REG_LOAD2, | |
c2d936a4 | 254 | |
04f48a68 | 255 | /* OF1.5+(28): struct ofp15_action_copy_field, ... VLMFF */ |
73178f20 | 256 | OFPAT_RAW15_COPY_FIELD, |
04f48a68 | 257 | /* ONF1.3-1.4(3200): struct onf_action_copy_field, ... VLMFF */ |
914624f8 | 258 | ONFACT_RAW13_COPY_FIELD, |
04f48a68 | 259 | /* NX1.0-1.4(6): struct nx_action_reg_move, ... VLMFF */ |
73178f20 BP |
260 | NXAST_RAW_REG_MOVE, |
261 | ||
4332b671 BP |
262 | /* OF1.5+(29): uint32_t. */ |
263 | OFPAT_RAW15_METER, | |
264 | ||
c2d936a4 BP |
265 | /* ## ------------------------- ## */ |
266 | /* ## Nicira extension actions. ## */ | |
267 | /* ## ------------------------- ## */ | |
268 | ||
269 | /* Actions similar to standard actions are listed with the standard actions. */ | |
270 | ||
271 | /* NX1.0+(1): uint16_t. */ | |
272 | NXAST_RAW_RESUBMIT, | |
273 | /* NX1.0+(14): struct nx_action_resubmit. */ | |
274 | NXAST_RAW_RESUBMIT_TABLE, | |
2cd20955 JR |
275 | /* NX1.0+(44): struct nx_action_resubmit. */ |
276 | NXAST_RAW_RESUBMIT_TABLE_CT, | |
c2d936a4 BP |
277 | |
278 | /* NX1.0+(2): uint32_t. */ | |
279 | NXAST_RAW_SET_TUNNEL, | |
280 | /* NX1.0+(9): uint64_t. */ | |
281 | NXAST_RAW_SET_TUNNEL64, | |
282 | ||
283 | /* NX1.0+(5): void. */ | |
284 | NXAST_RAW_POP_QUEUE, | |
285 | ||
c2d936a4 BP |
286 | /* NX1.0+(8): struct nx_action_note, ... */ |
287 | NXAST_RAW_NOTE, | |
288 | ||
04f48a68 | 289 | /* NX1.0+(10): struct nx_action_multipath. VLMFF */ |
c2d936a4 BP |
290 | NXAST_RAW_MULTIPATH, |
291 | ||
292 | /* NX1.0+(12): struct nx_action_bundle, ... */ | |
293 | NXAST_RAW_BUNDLE, | |
04f48a68 | 294 | /* NX1.0+(13): struct nx_action_bundle, ... VLMFF */ |
c2d936a4 BP |
295 | NXAST_RAW_BUNDLE_LOAD, |
296 | ||
04f48a68 | 297 | /* NX1.0+(15): struct nx_action_output_reg. VLMFF */ |
c2d936a4 | 298 | NXAST_RAW_OUTPUT_REG, |
04f48a68 | 299 | /* NX1.0+(32): struct nx_action_output_reg2. VLMFF */ |
bad8a439 | 300 | NXAST_RAW_OUTPUT_REG2, |
c2d936a4 | 301 | |
04f48a68 | 302 | /* NX1.0+(16): struct nx_action_learn, ... VLMFF */ |
c2d936a4 | 303 | NXAST_RAW_LEARN, |
4c71600d DDP |
304 | /* NX1.0+(45): struct nx_action_learn2, ... VLMFF */ |
305 | NXAST_RAW_LEARN2, | |
c2d936a4 BP |
306 | |
307 | /* NX1.0+(17): void. */ | |
308 | NXAST_RAW_EXIT, | |
309 | ||
310 | /* NX1.0+(19): struct nx_action_fin_timeout. */ | |
311 | NXAST_RAW_FIN_TIMEOUT, | |
312 | ||
313 | /* NX1.0+(20): struct nx_action_controller. */ | |
314 | NXAST_RAW_CONTROLLER, | |
aad28f47 | 315 | /* NX1.0+(37): struct ext_action_header, ... */ |
bdcad671 | 316 | NXAST_RAW_CONTROLLER2, |
c2d936a4 BP |
317 | |
318 | /* NX1.0+(22): struct nx_action_write_metadata. */ | |
319 | NXAST_RAW_WRITE_METADATA, | |
320 | ||
04f48a68 | 321 | /* NX1.0+(27): struct nx_action_stack. VLMFF */ |
c2d936a4 BP |
322 | NXAST_RAW_STACK_PUSH, |
323 | ||
04f48a68 | 324 | /* NX1.0+(28): struct nx_action_stack. VLMFF */ |
c2d936a4 BP |
325 | NXAST_RAW_STACK_POP, |
326 | ||
327 | /* NX1.0+(29): struct nx_action_sample. */ | |
328 | NXAST_RAW_SAMPLE, | |
f69f713b BY |
329 | /* NX1.0+(38): struct nx_action_sample2. */ |
330 | NXAST_RAW_SAMPLE2, | |
4930ea56 BP |
331 | /* NX1.0+(41): struct nx_action_sample2. */ |
332 | NXAST_RAW_SAMPLE3, | |
18080541 BP |
333 | |
334 | /* NX1.0+(34): struct nx_action_conjunction. */ | |
335 | NXAST_RAW_CONJUNCTION, | |
d4abaff5 | 336 | |
04f48a68 | 337 | /* NX1.0+(35): struct nx_action_conntrack, ... VLMFF */ |
07659514 JS |
338 | NXAST_RAW_CT, |
339 | ||
9ac0aada JR |
340 | /* NX1.0+(36): struct nx_action_nat, ... */ |
341 | NXAST_RAW_NAT, | |
342 | ||
aaca4fe0 WT |
343 | /* NX1.0+(39): struct nx_action_output_trunc. */ |
344 | NXAST_RAW_OUTPUT_TRUNC, | |
345 | ||
04f48a68 | 346 | /* NX1.0+(42): struct ext_action_header, ... VLMFF */ |
7ae62a67 WT |
347 | NXAST_RAW_CLONE, |
348 | ||
72fe7578 BP |
349 | /* NX1.0+(43): void. */ |
350 | NXAST_RAW_CT_CLEAR, | |
351 | ||
f839892a JS |
352 | /* NX1.3+(46): struct nx_action_encap, ... */ |
353 | NXAST_RAW_ENCAP, | |
354 | ||
355 | /* NX1.3+(47): struct nx_action_decap, ... */ | |
356 | NXAST_RAW_DECAP, | |
357 | ||
491e05c2 YY |
358 | /* NX1.3+(48): void. */ |
359 | NXAST_RAW_DEC_NSH_TTL, | |
360 | ||
5b34f8fc NS |
361 | /* NX1.0+(49): struct nx_action_check_pkt_larger, ... VLMFF */ |
362 | NXAST_RAW_CHECK_PKT_LARGER, | |
363 | ||
81f71381 YHW |
364 | /* NX1.0+(50): struct nx_action_delete_field. VLMFF */ |
365 | NXAST_RAW_DELETE_FIELD, | |
366 | ||
d4abaff5 BP |
367 | /* ## ------------------ ## */ |
368 | /* ## Debugging actions. ## */ | |
369 | /* ## ------------------ ## */ | |
370 | ||
371 | /* These are intentionally undocumented, subject to change, and ovs-vswitchd */ | |
372 | /* accepts them only if started with --enable-dummy. */ | |
373 | ||
a934a3dd JP |
374 | /* NX1.0+(254): void. */ |
375 | NXAST_RAW_DEBUG_SLOW, | |
376 | ||
d4abaff5 BP |
377 | /* NX1.0+(255): void. */ |
378 | NXAST_RAW_DEBUG_RECIRC, | |
c2d936a4 BP |
379 | }; |
380 | ||
381 | /* OpenFlow actions are always a multiple of 8 bytes in length. */ | |
382 | #define OFP_ACTION_ALIGN 8 | |
383 | ||
384 | /* Define a few functions for working with instructions. */ | |
385 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
386 | static inline const struct STRUCT * OVS_UNUSED \ | |
387 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
388 | { \ | |
389 | ovs_assert(inst->type == htons(ENUM)); \ | |
390 | return ALIGNED_CAST(struct STRUCT *, inst); \ | |
391 | } \ | |
392 | \ | |
393 | static inline void OVS_UNUSED \ | |
394 | instruction_init_##ENUM(struct STRUCT *s) \ | |
395 | { \ | |
396 | memset(s, 0, sizeof *s); \ | |
397 | s->type = htons(ENUM); \ | |
398 | s->len = htons(sizeof *s); \ | |
399 | } \ | |
400 | \ | |
401 | static inline struct STRUCT * OVS_UNUSED \ | |
402 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
403 | { \ | |
404 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
405 | instruction_init_##ENUM(s); \ | |
406 | return s; \ | |
407 | } | |
408 | OVS_INSTRUCTIONS | |
409 | #undef DEFINE_INST | |
410 | ||
411 | static void ofpacts_update_instruction_actions(struct ofpbuf *openflow, | |
412 | size_t ofs); | |
178742f9 | 413 | static void pad_ofpat(struct ofpbuf *openflow, size_t start_ofs); |
c2d936a4 BP |
414 | |
415 | static enum ofperr ofpacts_verify(const struct ofpact[], size_t ofpacts_len, | |
4332b671 | 416 | enum ofp_version, uint32_t allowed_ovsinsts, |
2e7ac3e0 BP |
417 | enum ofpact_type outer_action, |
418 | char **errorp); | |
c2d936a4 | 419 | |
128684a6 JR |
420 | static void put_set_field(struct ofpbuf *openflow, enum ofp_version, |
421 | enum mf_field_id, uint64_t value); | |
c2d936a4 | 422 | |
4b684612 BP |
423 | static void put_reg_load(struct ofpbuf *openflow, |
424 | const struct mf_subfield *, uint64_t value); | |
425 | ||
c2d936a4 BP |
426 | static enum ofperr ofpact_pull_raw(struct ofpbuf *, enum ofp_version, |
427 | enum ofp_raw_action_type *, uint64_t *arg); | |
428 | static void *ofpact_put_raw(struct ofpbuf *, enum ofp_version, | |
429 | enum ofp_raw_action_type, uint64_t arg); | |
430 | ||
cab50449 | 431 | static char *OVS_WARN_UNUSED_RESULT ofpacts_parse( |
efefbcae | 432 | char *str, const struct ofpact_parse_params *pp, |
d824b5b7 | 433 | bool allow_instructions, enum ofpact_type outer_action); |
07659514 JS |
434 | static enum ofperr ofpacts_pull_openflow_actions__( |
435 | struct ofpbuf *openflow, unsigned int actions_len, | |
436 | enum ofp_version version, uint32_t allowed_ovsinsts, | |
04f48a68 | 437 | struct ofpbuf *ofpacts, enum ofpact_type outer_action, |
5c7c16d8 | 438 | const struct vl_mff_map *vl_mff_map, uint64_t *ofpacts_tlv_bitmap); |
8e53fe8c | 439 | static char * OVS_WARN_UNUSED_RESULT ofpacts_parse_copy( |
efefbcae | 440 | const char *s_, const struct ofpact_parse_params *pp, |
8e53fe8c | 441 | bool allow_instructions, enum ofpact_type outer_action); |
d824b5b7 | 442 | |
ae6f7530 BP |
443 | static void inconsistent_match(enum ofputil_protocol *usable_protocols); |
444 | ||
4f20179d BP |
445 | /* Returns the ofpact following 'ofpact', except that if 'ofpact' contains |
446 | * nested ofpacts it returns the first one. */ | |
447 | struct ofpact * | |
448 | ofpact_next_flattened(const struct ofpact *ofpact) | |
449 | { | |
450 | switch (ofpact->type) { | |
451 | case OFPACT_OUTPUT: | |
452 | case OFPACT_GROUP: | |
453 | case OFPACT_CONTROLLER: | |
454 | case OFPACT_ENQUEUE: | |
455 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 456 | case OFPACT_OUTPUT_TRUNC: |
4f20179d BP |
457 | case OFPACT_BUNDLE: |
458 | case OFPACT_SET_FIELD: | |
459 | case OFPACT_SET_VLAN_VID: | |
460 | case OFPACT_SET_VLAN_PCP: | |
461 | case OFPACT_STRIP_VLAN: | |
462 | case OFPACT_PUSH_VLAN: | |
463 | case OFPACT_SET_ETH_SRC: | |
464 | case OFPACT_SET_ETH_DST: | |
465 | case OFPACT_SET_IPV4_SRC: | |
466 | case OFPACT_SET_IPV4_DST: | |
467 | case OFPACT_SET_IP_DSCP: | |
468 | case OFPACT_SET_IP_ECN: | |
469 | case OFPACT_SET_IP_TTL: | |
470 | case OFPACT_SET_L4_SRC_PORT: | |
471 | case OFPACT_SET_L4_DST_PORT: | |
472 | case OFPACT_REG_MOVE: | |
473 | case OFPACT_STACK_PUSH: | |
474 | case OFPACT_STACK_POP: | |
475 | case OFPACT_DEC_TTL: | |
476 | case OFPACT_SET_MPLS_LABEL: | |
477 | case OFPACT_SET_MPLS_TC: | |
478 | case OFPACT_SET_MPLS_TTL: | |
479 | case OFPACT_DEC_MPLS_TTL: | |
480 | case OFPACT_PUSH_MPLS: | |
481 | case OFPACT_POP_MPLS: | |
482 | case OFPACT_SET_TUNNEL: | |
483 | case OFPACT_SET_QUEUE: | |
484 | case OFPACT_POP_QUEUE: | |
485 | case OFPACT_FIN_TIMEOUT: | |
486 | case OFPACT_RESUBMIT: | |
487 | case OFPACT_LEARN: | |
488 | case OFPACT_CONJUNCTION: | |
489 | case OFPACT_MULTIPATH: | |
490 | case OFPACT_NOTE: | |
491 | case OFPACT_EXIT: | |
492 | case OFPACT_SAMPLE: | |
493 | case OFPACT_UNROLL_XLATE: | |
72fe7578 | 494 | case OFPACT_CT_CLEAR: |
4f20179d | 495 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 496 | case OFPACT_DEBUG_SLOW: |
4f20179d BP |
497 | case OFPACT_METER: |
498 | case OFPACT_CLEAR_ACTIONS: | |
499 | case OFPACT_WRITE_METADATA: | |
500 | case OFPACT_GOTO_TABLE: | |
501 | case OFPACT_NAT: | |
f839892a JS |
502 | case OFPACT_ENCAP: |
503 | case OFPACT_DECAP: | |
491e05c2 | 504 | case OFPACT_DEC_NSH_TTL: |
5b34f8fc | 505 | case OFPACT_CHECK_PKT_LARGER: |
81f71381 | 506 | case OFPACT_DELETE_FIELD: |
4f20179d BP |
507 | return ofpact_next(ofpact); |
508 | ||
7ae62a67 WT |
509 | case OFPACT_CLONE: |
510 | return ofpact_get_CLONE(ofpact)->actions; | |
511 | ||
4f20179d BP |
512 | case OFPACT_CT: |
513 | return ofpact_get_CT(ofpact)->actions; | |
514 | ||
515 | case OFPACT_WRITE_ACTIONS: | |
516 | return ofpact_get_WRITE_ACTIONS(ofpact)->actions; | |
517 | } | |
518 | ||
519 | OVS_NOT_REACHED(); | |
520 | } | |
521 | ||
d824b5b7 JS |
522 | /* Pull off existing actions or instructions. Used by nesting actions to keep |
523 | * ofpacts_parse() oblivious of actions nesting. | |
524 | * | |
525 | * Push the actions back on after nested parsing, e.g.: | |
526 | * | |
527 | * size_t ofs = ofpacts_pull(ofpacts); | |
528 | * ...nested parsing... | |
529 | * ofpbuf_push_uninit(ofpacts, ofs); | |
530 | */ | |
531 | static size_t | |
532 | ofpacts_pull(struct ofpbuf *ofpacts) | |
533 | { | |
534 | size_t ofs; | |
535 | ||
d824b5b7 JS |
536 | ofs = ofpacts->size; |
537 | ofpbuf_pull(ofpacts, ofs); | |
538 | ||
539 | return ofs; | |
540 | } | |
c2d936a4 BP |
541 | |
542 | #include "ofp-actions.inc1" | |
543 | \f | |
544 | /* Output actions. */ | |
545 | ||
546 | /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'. | |
547 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
548 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
549 | * packet should be sent. */ | |
550 | struct ofp10_action_output { | |
551 | ovs_be16 type; /* OFPAT10_OUTPUT. */ | |
552 | ovs_be16 len; /* Length is 8. */ | |
553 | ovs_be16 port; /* Output port. */ | |
554 | ovs_be16 max_len; /* Max length to send to controller. */ | |
e45e72f1 | 555 | }; |
c2d936a4 BP |
556 | OFP_ASSERT(sizeof(struct ofp10_action_output) == 8); |
557 | ||
558 | /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'. | |
559 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
560 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
561 | * packet should be sent.*/ | |
562 | struct ofp11_action_output { | |
563 | ovs_be16 type; /* OFPAT11_OUTPUT. */ | |
564 | ovs_be16 len; /* Length is 16. */ | |
565 | ovs_be32 port; /* Output port. */ | |
566 | ovs_be16 max_len; /* Max length to send to controller. */ | |
567 | uint8_t pad[6]; /* Pad to 64 bits. */ | |
568 | }; | |
569 | OFP_ASSERT(sizeof(struct ofp11_action_output) == 16); | |
e45e72f1 | 570 | |
f25d0cf3 | 571 | static enum ofperr |
c2d936a4 | 572 | decode_OFPAT_RAW10_OUTPUT(const struct ofp10_action_output *oao, |
f3cd3ac7 | 573 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 574 | struct ofpbuf *out) |
f25d0cf3 BP |
575 | { |
576 | struct ofpact_output *output; | |
577 | ||
578 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 579 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
580 | output->max_len = ntohs(oao->max_len); |
581 | ||
57ad4e9e | 582 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
583 | } |
584 | ||
585 | static enum ofperr | |
c2d936a4 | 586 | decode_OFPAT_RAW11_OUTPUT(const struct ofp11_action_output *oao, |
f3cd3ac7 JS |
587 | enum ofp_version ofp_version OVS_UNUSED, |
588 | struct ofpbuf *out) | |
f25d0cf3 | 589 | { |
c2d936a4 BP |
590 | struct ofpact_output *output; |
591 | enum ofperr error; | |
f25d0cf3 | 592 | |
c2d936a4 BP |
593 | output = ofpact_put_OUTPUT(out); |
594 | output->max_len = ntohs(oao->max_len); | |
595 | ||
596 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
597 | if (error) { | |
598 | return error; | |
f25d0cf3 | 599 | } |
c2d936a4 BP |
600 | |
601 | return ofpact_check_output_port(output->port, OFPP_MAX); | |
f25d0cf3 BP |
602 | } |
603 | ||
604 | static void | |
c2d936a4 BP |
605 | encode_OUTPUT(const struct ofpact_output *output, |
606 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 607 | { |
c2d936a4 BP |
608 | if (ofp_version == OFP10_VERSION) { |
609 | struct ofp10_action_output *oao; | |
f25d0cf3 | 610 | |
c2d936a4 BP |
611 | oao = put_OFPAT10_OUTPUT(out); |
612 | oao->port = htons(ofp_to_u16(output->port)); | |
613 | oao->max_len = htons(output->max_len); | |
614 | } else { | |
615 | struct ofp11_action_output *oao; | |
616 | ||
617 | oao = put_OFPAT11_OUTPUT(out); | |
618 | oao->port = ofputil_port_to_ofp11(output->port); | |
619 | oao->max_len = htons(output->max_len); | |
620 | } | |
f25d0cf3 BP |
621 | } |
622 | ||
aaca4fe0 | 623 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
624 | parse_truncate_subfield(const char *arg_, |
625 | const struct ofpact_parse_params *pp, | |
626 | struct ofpact_output_trunc *output_trunc) | |
aaca4fe0 WT |
627 | { |
628 | char *key, *value; | |
629 | char *arg = CONST_CAST(char *, arg_); | |
630 | ||
631 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
632 | if (!strcmp(key, "port")) { | |
efefbcae | 633 | if (!ofputil_port_from_string(value, pp->port_map, |
50f96b10 | 634 | &output_trunc->port)) { |
aaca4fe0 WT |
635 | return xasprintf("output to unknown truncate port: %s", |
636 | value); | |
637 | } | |
638 | if (ofp_to_u16(output_trunc->port) > ofp_to_u16(OFPP_MAX)) { | |
639 | if (output_trunc->port != OFPP_LOCAL && | |
640 | output_trunc->port != OFPP_IN_PORT) | |
641 | return xasprintf("output to unsupported truncate port: %s", | |
642 | value); | |
643 | } | |
644 | } else if (!strcmp(key, "max_len")) { | |
645 | char *err; | |
646 | ||
647 | err = str_to_u32(value, &output_trunc->max_len); | |
648 | if (err) { | |
649 | return err; | |
650 | } | |
dca97ce8 BP |
651 | |
652 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
653 | return xasprintf("max_len %"PRIu32" is less than the minimum " | |
654 | "value %d", | |
655 | output_trunc->max_len, ETH_HEADER_LEN); | |
656 | } | |
aaca4fe0 WT |
657 | } else { |
658 | return xasprintf("invalid key '%s' in output_trunc argument", | |
659 | key); | |
660 | } | |
661 | } | |
662 | return NULL; | |
663 | } | |
664 | ||
cab50449 | 665 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 666 | parse_OUTPUT(const char *arg, const struct ofpact_parse_params *pp) |
f25d0cf3 | 667 | { |
21b2fa61 | 668 | if (strstr(arg, "port") && strstr(arg, "max_len")) { |
aaca4fe0 WT |
669 | struct ofpact_output_trunc *output_trunc; |
670 | ||
efefbcae BP |
671 | output_trunc = ofpact_put_OUTPUT_TRUNC(pp->ofpacts); |
672 | return parse_truncate_subfield(arg, pp, output_trunc); | |
7df14f8b | 673 | } |
c2d936a4 | 674 | |
7df14f8b | 675 | ofp_port_t port; |
efefbcae BP |
676 | if (ofputil_port_from_string(arg, pp->port_map, &port)) { |
677 | struct ofpact_output *output = ofpact_put_OUTPUT(pp->ofpacts); | |
7df14f8b BP |
678 | output->port = port; |
679 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; | |
c2d936a4 | 680 | return NULL; |
f25d0cf3 | 681 | } |
7df14f8b BP |
682 | |
683 | struct mf_subfield src; | |
684 | char *error = mf_parse_subfield(&src, arg); | |
685 | if (!error) { | |
686 | struct ofpact_output_reg *output_reg; | |
687 | ||
efefbcae | 688 | output_reg = ofpact_put_OUTPUT_REG(pp->ofpacts); |
7df14f8b BP |
689 | output_reg->max_len = UINT16_MAX; |
690 | output_reg->src = src; | |
691 | return NULL; | |
692 | } | |
693 | free(error); | |
694 | ||
695 | return xasprintf("%s: output to unknown port", arg); | |
c2d936a4 | 696 | } |
f25d0cf3 | 697 | |
c2d936a4 | 698 | static void |
50f96b10 | 699 | format_OUTPUT(const struct ofpact_output *a, |
efefbcae | 700 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
701 | { |
702 | if (ofp_to_u16(a->port) < ofp_to_u16(OFPP_MAX)) { | |
efefbcae | 703 | ds_put_format(fp->s, "%soutput:%s", colors.special, colors.end); |
50f96b10 | 704 | } |
efefbcae | 705 | ofputil_format_port(a->port, fp->port_map, fp->s); |
50f96b10 | 706 | if (a->port == OFPP_CONTROLLER) { |
efefbcae | 707 | ds_put_format(fp->s, ":%"PRIu16, a->max_len); |
c2d936a4 | 708 | } |
f25d0cf3 | 709 | } |
ae6f7530 BP |
710 | |
711 | static enum ofperr | |
712 | check_OUTPUT(const struct ofpact_output *a, | |
713 | const struct ofpact_check_params *cp) | |
714 | { | |
715 | return ofpact_check_output_port(a->port, cp->max_ports); | |
716 | } | |
c2d936a4 BP |
717 | \f |
718 | /* Group actions. */ | |
f25d0cf3 BP |
719 | |
720 | static enum ofperr | |
88c8ca26 | 721 | decode_OFPAT_RAW_GROUP(uint32_t group_id, |
f3cd3ac7 JS |
722 | enum ofp_version ofp_version OVS_UNUSED, |
723 | struct ofpbuf *out) | |
f25d0cf3 | 724 | { |
c2d936a4 BP |
725 | ofpact_put_GROUP(out)->group_id = group_id; |
726 | return 0; | |
727 | } | |
f25d0cf3 | 728 | |
c2d936a4 BP |
729 | static void |
730 | encode_GROUP(const struct ofpact_group *group, | |
731 | enum ofp_version ofp_version, struct ofpbuf *out) | |
732 | { | |
88c8ca26 | 733 | put_OFPAT_GROUP(out, ofp_version, group->group_id); |
c2d936a4 | 734 | } |
f25d0cf3 | 735 | |
cab50449 | 736 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 737 | parse_GROUP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 738 | { |
efefbcae | 739 | return str_to_u32(arg, &ofpact_put_GROUP(pp->ofpacts)->group_id); |
f25d0cf3 BP |
740 | } |
741 | ||
742 | static void | |
50f96b10 | 743 | format_GROUP(const struct ofpact_group *a, |
efefbcae | 744 | const struct ofpact_format_params *fp) |
f25d0cf3 | 745 | { |
efefbcae | 746 | ds_put_format(fp->s, "%sgroup:%s%"PRIu32, |
b1c5bf1f | 747 | colors.special, colors.end, a->group_id); |
f25d0cf3 | 748 | } |
ae6f7530 BP |
749 | |
750 | static enum ofperr | |
751 | check_GROUP(const struct ofpact_group *a OVS_UNUSED, | |
752 | const struct ofpact_check_params *cp OVS_UNUSED) | |
753 | { | |
754 | return 0; | |
755 | } | |
c2d936a4 BP |
756 | \f |
757 | /* Action structure for NXAST_CONTROLLER. | |
758 | * | |
759 | * This generalizes using OFPAT_OUTPUT to send a packet to OFPP_CONTROLLER. In | |
760 | * addition to the 'max_len' that OFPAT_OUTPUT supports, it also allows | |
761 | * specifying: | |
762 | * | |
763 | * - 'reason': The reason code to use in the ofp_packet_in or nx_packet_in. | |
764 | * | |
765 | * - 'controller_id': The ID of the controller connection to which the | |
766 | * ofp_packet_in should be sent. The ofp_packet_in or nx_packet_in is | |
767 | * sent only to controllers that have the specified controller connection | |
768 | * ID. See "struct nx_controller_id" for more information. */ | |
769 | struct nx_action_controller { | |
770 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
771 | ovs_be16 len; /* Length is 16. */ | |
772 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
773 | ovs_be16 subtype; /* NXAST_CONTROLLER. */ | |
774 | ovs_be16 max_len; /* Maximum length to send to controller. */ | |
775 | ovs_be16 controller_id; /* Controller ID to send packet-in. */ | |
776 | uint8_t reason; /* enum ofp_packet_in_reason (OFPR_*). */ | |
777 | uint8_t zero; /* Must be zero. */ | |
778 | }; | |
779 | OFP_ASSERT(sizeof(struct nx_action_controller) == 16); | |
f25d0cf3 | 780 | |
77ab5fd2 BP |
781 | /* Properties for NXAST_CONTROLLER2. |
782 | * | |
783 | * For more information on the effect of NXAC2PT_PAUSE, see the large comment | |
784 | * on NXT_PACKET_IN2 in nicira-ext.h */ | |
bdcad671 BP |
785 | enum nx_action_controller2_prop_type { |
786 | NXAC2PT_MAX_LEN, /* ovs_be16 max bytes to send (default all). */ | |
787 | NXAC2PT_CONTROLLER_ID, /* ovs_be16 dest controller ID (default 0). */ | |
788 | NXAC2PT_REASON, /* uint8_t reason (OFPR_*), default 0. */ | |
789 | NXAC2PT_USERDATA, /* Data to copy into NXPINT_USERDATA. */ | |
77ab5fd2 | 790 | NXAC2PT_PAUSE, /* Flag to pause pipeline to resume later. */ |
206ddb9a | 791 | NXAC2PT_METER_ID, /* ovs_b32 meter (default NX_CTLR_NO_METER). */ |
bdcad671 BP |
792 | }; |
793 | ||
aad28f47 BP |
794 | /* The action structure for NXAST_CONTROLLER2 is "struct ext_action_header", |
795 | * followed by NXAC2PT_* properties. */ | |
bdcad671 | 796 | |
c2d936a4 BP |
797 | static enum ofperr |
798 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 799 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 800 | struct ofpbuf *out) |
f25d0cf3 BP |
801 | { |
802 | struct ofpact_controller *oc; | |
803 | ||
804 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 805 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
806 | oc->max_len = ntohs(nac->max_len); |
807 | oc->controller_id = ntohs(nac->controller_id); | |
808 | oc->reason = nac->reason; | |
206ddb9a | 809 | oc->meter_id = NX_CTLR_NO_METER; |
ce058104 | 810 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
811 | |
812 | return 0; | |
813 | } | |
814 | ||
815 | static enum ofperr | |
aad28f47 | 816 | decode_NXAST_RAW_CONTROLLER2(const struct ext_action_header *eah, |
bdcad671 BP |
817 | enum ofp_version ofp_version OVS_UNUSED, |
818 | struct ofpbuf *out) | |
819 | { | |
aad28f47 | 820 | if (!is_all_zeros(eah->pad, sizeof eah->pad)) { |
bdcad671 BP |
821 | return OFPERR_NXBRC_MUST_BE_ZERO; |
822 | } | |
823 | ||
824 | size_t start_ofs = out->size; | |
825 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
826 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
827 | oc->max_len = UINT16_MAX; | |
828 | oc->reason = OFPR_ACTION; | |
206ddb9a | 829 | oc->meter_id = NX_CTLR_NO_METER; |
bdcad671 BP |
830 | |
831 | struct ofpbuf properties; | |
aad28f47 BP |
832 | ofpbuf_use_const(&properties, eah, ntohs(eah->len)); |
833 | ofpbuf_pull(&properties, sizeof *eah); | |
bdcad671 BP |
834 | |
835 | while (properties.size > 0) { | |
836 | struct ofpbuf payload; | |
837 | uint64_t type; | |
838 | ||
839 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
840 | if (error) { | |
841 | return error; | |
842 | } | |
843 | ||
844 | switch (type) { | |
845 | case NXAC2PT_MAX_LEN: | |
846 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
847 | break; | |
848 | ||
849 | case NXAC2PT_CONTROLLER_ID: | |
850 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
851 | break; | |
852 | ||
853 | case NXAC2PT_REASON: { | |
854 | uint8_t u8; | |
855 | error = ofpprop_parse_u8(&payload, &u8); | |
856 | oc->reason = u8; | |
857 | break; | |
858 | } | |
859 | ||
860 | case NXAC2PT_USERDATA: | |
024d93f6 | 861 | out->size = start_ofs + sizeof(struct ofpact_controller); |
bdcad671 BP |
862 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); |
863 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
864 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
865 | break; | |
866 | ||
77ab5fd2 BP |
867 | case NXAC2PT_PAUSE: |
868 | oc->pause = true; | |
869 | break; | |
870 | ||
206ddb9a JP |
871 | case NXAC2PT_METER_ID: |
872 | error = ofpprop_parse_u32(&payload, &oc->meter_id); | |
873 | break; | |
874 | ||
bdcad671 BP |
875 | default: |
876 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
877 | break; | |
878 | } | |
879 | if (error) { | |
880 | return error; | |
881 | } | |
882 | } | |
883 | ||
ce058104 | 884 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 885 | |
c2d936a4 | 886 | return 0; |
f25d0cf3 BP |
887 | } |
888 | ||
c2d936a4 BP |
889 | static void |
890 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
891 | enum ofp_version ofp_version OVS_UNUSED, | |
892 | struct ofpbuf *out) | |
4cceacb9 | 893 | { |
bdcad671 | 894 | if (controller->userdata_len |
77ab5fd2 | 895 | || controller->pause |
206ddb9a | 896 | || controller->meter_id != NX_CTLR_NO_METER |
bdcad671 BP |
897 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
898 | size_t start_ofs = out->size; | |
899 | put_NXAST_CONTROLLER2(out); | |
900 | if (controller->max_len != UINT16_MAX) { | |
901 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
902 | } | |
903 | if (controller->controller_id != 0) { | |
904 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
905 | controller->controller_id); | |
906 | } | |
907 | if (controller->reason != OFPR_ACTION) { | |
908 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
909 | } | |
910 | if (controller->userdata_len != 0) { | |
911 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
912 | controller->userdata_len); | |
913 | } | |
77ab5fd2 BP |
914 | if (controller->pause) { |
915 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
916 | } | |
206ddb9a JP |
917 | if (controller->meter_id != NX_CTLR_NO_METER) { |
918 | ofpprop_put_u32(out, NXAC2PT_METER_ID, controller->meter_id); | |
919 | } | |
bdcad671 BP |
920 | pad_ofpat(out, start_ofs); |
921 | } else { | |
922 | struct nx_action_controller *nac; | |
4cceacb9 | 923 | |
bdcad671 BP |
924 | nac = put_NXAST_CONTROLLER(out); |
925 | nac->max_len = htons(controller->max_len); | |
926 | nac->controller_id = htons(controller->controller_id); | |
927 | nac->reason = controller->reason; | |
928 | } | |
c2d936a4 BP |
929 | } |
930 | ||
cab50449 | 931 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 932 | parse_CONTROLLER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
933 | { |
934 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
935 | uint16_t controller_id = 0; | |
936 | uint16_t max_len = UINT16_MAX; | |
206ddb9a | 937 | uint32_t meter_id = NX_CTLR_NO_METER; |
bdcad671 | 938 | const char *userdata = NULL; |
77ab5fd2 | 939 | bool pause = false; |
c2d936a4 BP |
940 | |
941 | if (!arg[0]) { | |
942 | /* Use defaults. */ | |
943 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
944 | char *error = str_to_u16(arg, "max_len", &max_len); | |
945 | if (error) { | |
946 | return error; | |
947 | } | |
948 | } else { | |
949 | char *name, *value; | |
950 | ||
951 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
952 | if (!strcmp(name, "reason")) { | |
953 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
954 | return xasprintf("unknown reason \"%s\"", value); | |
955 | } | |
956 | } else if (!strcmp(name, "max_len")) { | |
957 | char *error = str_to_u16(value, "max_len", &max_len); | |
958 | if (error) { | |
959 | return error; | |
960 | } | |
961 | } else if (!strcmp(name, "id")) { | |
962 | char *error = str_to_u16(value, "id", &controller_id); | |
963 | if (error) { | |
964 | return error; | |
965 | } | |
bdcad671 BP |
966 | } else if (!strcmp(name, "userdata")) { |
967 | userdata = value; | |
77ab5fd2 BP |
968 | } else if (!strcmp(name, "pause")) { |
969 | pause = true; | |
206ddb9a JP |
970 | } else if (!strcmp(name, "meter_id")) { |
971 | char *error = str_to_u32(value, &meter_id); | |
972 | if (error) { | |
973 | return error; | |
974 | } | |
c2d936a4 BP |
975 | } else { |
976 | return xasprintf("unknown key \"%s\" parsing controller " | |
977 | "action", name); | |
978 | } | |
979 | } | |
4cceacb9 JS |
980 | } |
981 | ||
206ddb9a JP |
982 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause |
983 | && meter_id == NX_CTLR_NO_METER) { | |
c2d936a4 | 984 | struct ofpact_output *output; |
4cceacb9 | 985 | |
efefbcae | 986 | output = ofpact_put_OUTPUT(pp->ofpacts); |
c2d936a4 BP |
987 | output->port = OFPP_CONTROLLER; |
988 | output->max_len = max_len; | |
989 | } else { | |
990 | struct ofpact_controller *controller; | |
991 | ||
efefbcae | 992 | controller = ofpact_put_CONTROLLER(pp->ofpacts); |
c2d936a4 BP |
993 | controller->max_len = max_len; |
994 | controller->reason = reason; | |
995 | controller->controller_id = controller_id; | |
77ab5fd2 | 996 | controller->pause = pause; |
206ddb9a | 997 | controller->meter_id = meter_id; |
bdcad671 BP |
998 | |
999 | if (userdata) { | |
efefbcae BP |
1000 | size_t start_ofs = pp->ofpacts->size; |
1001 | const char *end = ofpbuf_put_hex(pp->ofpacts, userdata, NULL); | |
bdcad671 BP |
1002 | if (*end) { |
1003 | return xstrdup("bad hex digit in `controller' " | |
1004 | "action `userdata'"); | |
1005 | } | |
efefbcae BP |
1006 | size_t userdata_len = pp->ofpacts->size - start_ofs; |
1007 | controller = pp->ofpacts->header; | |
bdcad671 BP |
1008 | controller->userdata_len = userdata_len; |
1009 | } | |
8e738337 TA |
1010 | |
1011 | if (ofpbuf_oversized(pp->ofpacts)) { | |
1012 | return xasprintf("input too big"); | |
1013 | } | |
1014 | ||
efefbcae | 1015 | ofpact_finish_CONTROLLER(pp->ofpacts, &controller); |
c2d936a4 BP |
1016 | } |
1017 | ||
1018 | return NULL; | |
4cceacb9 JS |
1019 | } |
1020 | ||
bdcad671 BP |
1021 | static void |
1022 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
1023 | { | |
1024 | for (size_t i = 0; i < len; i++) { | |
1025 | if (i) { | |
1026 | ds_put_char(s, '.'); | |
1027 | } | |
1028 | ds_put_format(s, "%02"PRIx8, data[i]); | |
1029 | } | |
1030 | } | |
1031 | ||
f25d0cf3 | 1032 | static void |
50f96b10 | 1033 | format_CONTROLLER(const struct ofpact_controller *a, |
efefbcae | 1034 | const struct ofpact_format_params *fp) |
f25d0cf3 | 1035 | { |
77ab5fd2 | 1036 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
206ddb9a | 1037 | && !a->pause && a->meter_id == NX_CTLR_NO_METER) { |
efefbcae | 1038 | ds_put_format(fp->s, "%sCONTROLLER:%s%"PRIu16, |
b1c5bf1f | 1039 | colors.special, colors.end, a->max_len); |
c2d936a4 BP |
1040 | } else { |
1041 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 1042 | |
efefbcae | 1043 | ds_put_format(fp->s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
1044 | if (reason != OFPR_ACTION) { |
1045 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
1046 | ||
efefbcae | 1047 | ds_put_format(fp->s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
1048 | ofputil_packet_in_reason_to_string( |
1049 | reason, reasonbuf, sizeof reasonbuf)); | |
1050 | } | |
1051 | if (a->max_len != UINT16_MAX) { | |
efefbcae | 1052 | ds_put_format(fp->s, "%smax_len=%s%"PRIu16",", |
b1c5bf1f | 1053 | colors.param, colors.end, a->max_len); |
c2d936a4 BP |
1054 | } |
1055 | if (a->controller_id != 0) { | |
efefbcae | 1056 | ds_put_format(fp->s, "%sid=%s%"PRIu16",", |
b1c5bf1f | 1057 | colors.param, colors.end, a->controller_id); |
c2d936a4 | 1058 | } |
bdcad671 | 1059 | if (a->userdata_len) { |
efefbcae BP |
1060 | ds_put_format(fp->s, "%suserdata=%s", colors.param, colors.end); |
1061 | format_hex_arg(fp->s, a->userdata, a->userdata_len); | |
1062 | ds_put_char(fp->s, ','); | |
bdcad671 | 1063 | } |
77ab5fd2 | 1064 | if (a->pause) { |
efefbcae | 1065 | ds_put_format(fp->s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 1066 | } |
206ddb9a JP |
1067 | if (a->meter_id != NX_CTLR_NO_METER) { |
1068 | ds_put_format(fp->s, "%smeter_id=%s%"PRIu32",", | |
1069 | colors.param, colors.end, a->meter_id); | |
1070 | } | |
efefbcae BP |
1071 | ds_chomp(fp->s, ','); |
1072 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 | 1073 | } |
f25d0cf3 | 1074 | } |
ae6f7530 BP |
1075 | |
1076 | static enum ofperr | |
1077 | check_CONTROLLER(const struct ofpact_controller *a OVS_UNUSED, | |
1078 | const struct ofpact_check_params *cp OVS_UNUSED) | |
1079 | { | |
1080 | return 0; | |
1081 | } | |
c2d936a4 BP |
1082 | \f |
1083 | /* Enqueue action. */ | |
1084 | struct ofp10_action_enqueue { | |
1085 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
1086 | ovs_be16 len; /* Len is 16. */ | |
1087 | ovs_be16 port; /* Port that queue belongs. Should | |
1088 | refer to a valid physical port | |
1089 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
1090 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
1091 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
1092 | }; | |
1093 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 1094 | |
c2d967a5 | 1095 | static enum ofperr |
c2d936a4 | 1096 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 1097 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1098 | struct ofpbuf *out) |
c2d967a5 | 1099 | { |
c2d936a4 | 1100 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 1101 | |
c2d936a4 BP |
1102 | enqueue = ofpact_put_ENQUEUE(out); |
1103 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
1104 | enqueue->queue = ntohl(oae->queue_id); | |
1105 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
1106 | && enqueue->port != OFPP_IN_PORT | |
1107 | && enqueue->port != OFPP_LOCAL) { | |
1108 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1109 | } | |
1110 | return 0; | |
c2d967a5 MM |
1111 | } |
1112 | ||
c2d936a4 BP |
1113 | static void |
1114 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
1115 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 1116 | { |
c2d936a4 BP |
1117 | if (ofp_version == OFP10_VERSION) { |
1118 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 1119 | |
c2d936a4 BP |
1120 | oae = put_OFPAT10_ENQUEUE(out); |
1121 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
1122 | oae->queue_id = htonl(enqueue->queue); | |
1123 | } else { | |
0f2aaee9 BP |
1124 | put_OFPAT_SET_QUEUE(out, ofp_version, enqueue->queue); |
1125 | ||
1126 | struct ofp11_action_output *oao = put_OFPAT11_OUTPUT(out); | |
1127 | oao->port = ofputil_port_to_ofp11(enqueue->port); | |
1128 | oao->max_len = OVS_BE16_MAX; | |
1129 | ||
1130 | put_NXAST_POP_QUEUE(out); | |
c2d967a5 | 1131 | } |
c2d936a4 | 1132 | } |
c2d967a5 | 1133 | |
cab50449 | 1134 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1135 | parse_ENQUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
1136 | { |
1137 | char *sp = NULL; | |
1138 | char *port = strtok_r(arg, ":q,", &sp); | |
1139 | char *queue = strtok_r(NULL, "", &sp); | |
1140 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 1141 | |
c2d936a4 BP |
1142 | if (port == NULL || queue == NULL) { |
1143 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
1144 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
1145 | } |
1146 | ||
efefbcae BP |
1147 | enqueue = ofpact_put_ENQUEUE(pp->ofpacts); |
1148 | if (!ofputil_port_from_string(port, pp->port_map, &enqueue->port)) { | |
c2d936a4 BP |
1149 | return xasprintf("%s: enqueue to unknown port", port); |
1150 | } | |
1151 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
1152 | } |
1153 | ||
c2d936a4 | 1154 | static void |
50f96b10 | 1155 | format_ENQUEUE(const struct ofpact_enqueue *a, |
efefbcae | 1156 | const struct ofpact_format_params *fp) |
29089a54 | 1157 | { |
efefbcae BP |
1158 | ds_put_format(fp->s, "%senqueue:%s", colors.param, colors.end); |
1159 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
1160 | ds_put_format(fp->s, ":%"PRIu32, a->queue); | |
c2d936a4 | 1161 | } |
ae6f7530 BP |
1162 | |
1163 | static enum ofperr | |
1164 | check_ENQUEUE(const struct ofpact_enqueue *a, | |
1165 | const struct ofpact_check_params *cp) | |
1166 | { | |
1167 | if (ofp_to_u16(a->port) >= ofp_to_u16(cp->max_ports) | |
1168 | && a->port != OFPP_IN_PORT | |
1169 | && a->port != OFPP_LOCAL) { | |
1170 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1171 | } | |
1172 | return 0; | |
1173 | } | |
c2d936a4 BP |
1174 | \f |
1175 | /* Action structure for NXAST_OUTPUT_REG. | |
1176 | * | |
1177 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
1178 | * | |
1179 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
1180 | * the NXAST_REG_LOAD action. | |
1181 | * | |
1182 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
1183 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
1184 | * | |
1185 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
1186 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
1187 | * field of OFPAT_OUTPUT. | |
1188 | * | |
1189 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1190 | struct nx_action_output_reg { | |
1191 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1192 | ovs_be16 len; /* 24. */ | |
1193 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1194 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1195 | |
c2d936a4 BP |
1196 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1197 | ovs_be32 src; /* Source. */ | |
29089a54 | 1198 | |
c2d936a4 | 1199 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1200 | |
c2d936a4 BP |
1201 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1202 | }; | |
1203 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1204 | |
bad8a439 BP |
1205 | /* Action structure for NXAST_OUTPUT_REG2. |
1206 | * | |
1207 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1208 | * experimenter OXM as 'src'. | |
1209 | */ | |
1210 | struct nx_action_output_reg2 { | |
1211 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1212 | ovs_be16 len; /* 24. */ | |
1213 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1214 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1215 | ||
1216 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1217 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1218 | ||
1219 | /* Followed by: | |
1220 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1221 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1222 | uint8_t pad[10]; | |
1223 | }; | |
1224 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1225 | ||
a7a2d006 | 1226 | static enum ofperr |
c2d936a4 | 1227 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1228 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1229 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1230 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
a7a2d006 | 1231 | { |
c2d936a4 | 1232 | struct ofpact_output_reg *output_reg; |
5c7c16d8 | 1233 | enum ofperr error; |
a7a2d006 | 1234 | |
c2d936a4 | 1235 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1236 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1237 | } | |
a7a2d006 | 1238 | |
c2d936a4 | 1239 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1240 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1241 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); |
1242 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1243 | output_reg->max_len = ntohs(naor->max_len); | |
5c7c16d8 YHW |
1244 | error = mf_vl_mff_mf_from_nxm_header(ntohl(naor->src), vl_mff_map, |
1245 | &output_reg->src.field, tlv_bitmap); | |
1246 | if (error) { | |
1247 | return error; | |
04f48a68 YHW |
1248 | } |
1249 | ||
c2d936a4 | 1250 | return mf_check_src(&output_reg->src, NULL); |
a7a2d006 JS |
1251 | } |
1252 | ||
bad8a439 BP |
1253 | static enum ofperr |
1254 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 | 1255 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1256 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1257 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 BP |
1258 | { |
1259 | struct ofpact_output_reg *output_reg; | |
5c7c16d8 YHW |
1260 | enum ofperr error; |
1261 | ||
bad8a439 BP |
1262 | output_reg = ofpact_put_OUTPUT_REG(out); |
1263 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
1264 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1265 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1266 | output_reg->max_len = ntohs(naor->max_len); | |
1267 | ||
0a2869d5 | 1268 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1269 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 | 1270 | |
5c7c16d8 YHW |
1271 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &output_reg->src.field, |
1272 | NULL, tlv_bitmap); | |
bad8a439 BP |
1273 | if (error) { |
1274 | return error; | |
1275 | } | |
5c7c16d8 | 1276 | |
6fd6ed71 | 1277 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1278 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1279 | } | |
1280 | ||
1281 | return mf_check_src(&output_reg->src, NULL); | |
1282 | } | |
1283 | ||
c2d936a4 BP |
1284 | static void |
1285 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1286 | enum ofp_version ofp_version OVS_UNUSED, | |
1287 | struct ofpbuf *out) | |
f25d0cf3 | 1288 | { |
bad8a439 BP |
1289 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1290 | * cannot be encoded in the older form, encode it as | |
1291 | * NXAST_RAW_OUTPUT_REG2. */ | |
1292 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1293 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1294 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1295 | size_t size = out->size; |
bad8a439 BP |
1296 | |
1297 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1298 | output_reg->src.n_bits); | |
1299 | naor->max_len = htons(output_reg->max_len); | |
1300 | ||
6fd6ed71 | 1301 | out->size = size - sizeof naor->pad; |
04f48a68 | 1302 | nx_put_mff_header(out, output_reg->src.field, 0, false); |
6fd6ed71 | 1303 | out->size = size; |
bad8a439 BP |
1304 | } else { |
1305 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1306 | |
bad8a439 BP |
1307 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1308 | output_reg->src.n_bits); | |
04f48a68 | 1309 | naor->src = htonl(nxm_header_from_mff(output_reg->src.field)); |
bad8a439 BP |
1310 | naor->max_len = htons(output_reg->max_len); |
1311 | } | |
f25d0cf3 BP |
1312 | } |
1313 | ||
cab50449 | 1314 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1315 | parse_OUTPUT_REG(const char *arg, const struct ofpact_parse_params *pp) |
f25d0cf3 | 1316 | { |
efefbcae | 1317 | return parse_OUTPUT(arg, pp); |
f25d0cf3 BP |
1318 | } |
1319 | ||
c2d936a4 | 1320 | static void |
50f96b10 | 1321 | format_OUTPUT_REG(const struct ofpact_output_reg *a, |
efefbcae | 1322 | const struct ofpact_format_params *fp) |
f25d0cf3 | 1323 | { |
efefbcae BP |
1324 | ds_put_format(fp->s, "%soutput:%s", colors.special, colors.end); |
1325 | mf_format_subfield(&a->src, fp->s); | |
c2d936a4 | 1326 | } |
ae6f7530 BP |
1327 | |
1328 | static enum ofperr | |
1329 | check_OUTPUT_REG(const struct ofpact_output_reg *a, | |
1330 | const struct ofpact_check_params *cp) | |
1331 | { | |
1332 | return mf_check_src(&a->src, cp->match); | |
1333 | } | |
c2d936a4 BP |
1334 | \f |
1335 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1336 | * | |
91fc374a | 1337 | * The bundle actions choose a member from a supplied list of options. |
c2d936a4 BP |
1338 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its |
1339 | * selection to a register. | |
1340 | * | |
91fc374a BP |
1341 | * The list of possible members follows the nx_action_bundle structure. The |
1342 | * size of each member is governed by its type as indicated by the | |
1343 | * 'member_type' parameter. The list of members should be padded at its end | |
1344 | * with zeros to make the total length of the action a multiple of 8. | |
c2d936a4 | 1345 | * |
91fc374a BP |
1346 | * Switches infer from the 'member_type' parameter the size of each member. |
1347 | * All implementations must support the NXM_OF_IN_PORT 'member_type' which | |
1348 | * indicates that the members are OpenFlow port numbers with | |
1349 | * NXM_LENGTH(NXM_OF_IN_PORT) == 2 byte width. Switches should reject actions | |
1350 | * which indicate unknown or unsupported member types. | |
c2d936a4 BP |
1351 | * |
1352 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
91fc374a | 1353 | * member. If the switch does not support the specified 'algorithm' parameter, |
c2d936a4 BP |
1354 | * it should reject the action. |
1355 | * | |
91fc374a BP |
1356 | * Several algorithms take into account liveness when selecting members. The |
1357 | * liveness of a member is implementation defined (with one exception), but | |
1358 | * will generally take into account things like its carrier status and the | |
1359 | * results of any link monitoring protocols which happen to be running on it. | |
1360 | * In order to give controllers a place-holder value, the OFPP_NONE port is | |
1361 | * always considered live, that is, NXAST_BUNDLE_LOAD stores OFPP_NONE in the | |
1362 | * output register if no member is live. | |
1363 | * | |
1364 | * Some member selection strategies require the use of a hash function, in | |
1365 | * which case the 'fields' and 'basis' parameters should be populated. The | |
1366 | * 'fields' parameter (one of NX_HASH_FIELDS_*) designates which parts of the | |
1367 | * flow to hash. Refer to the definition of "enum nx_hash_fields" for details. | |
1368 | * The 'basis' parameter is used as a universal hash parameter. Different | |
1369 | * values of 'basis' yield different hash results. | |
c2d936a4 BP |
1370 | * |
1371 | * The 'zero' parameter at the end of the action structure is reserved for | |
1372 | * future use. Switches are required to reject actions which have nonzero | |
1373 | * bytes in the 'zero' field. | |
1374 | * | |
1375 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1376 | * should reject actions which have nonzero bytes in either of these fields. | |
1377 | * | |
91fc374a | 1378 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected member in |
c2d936a4 BP |
1379 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are |
1380 | * similar to those for the NXAST_REG_LOAD action. */ | |
1381 | struct nx_action_bundle { | |
1382 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
91fc374a | 1383 | ovs_be16 len; /* Length including members. */ |
c2d936a4 BP |
1384 | ovs_be32 vendor; /* NX_VENDOR_ID. */ |
1385 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1386 | |
91fc374a | 1387 | /* Member choice algorithm to apply to hash value. */ |
c2d936a4 | 1388 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ |
4cceacb9 | 1389 | |
c2d936a4 BP |
1390 | /* What fields to hash and how. */ |
1391 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1392 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1393 | |
91fc374a BP |
1394 | ovs_be32 member_type; /* NXM_OF_IN_PORT. */ |
1395 | ovs_be16 n_members; /* Number of members. */ | |
f25d0cf3 | 1396 | |
c2d936a4 BP |
1397 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1398 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1399 | |
c2d936a4 BP |
1400 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1401 | }; | |
1402 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1403 | |
c2d936a4 BP |
1404 | static enum ofperr |
1405 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
5c7c16d8 YHW |
1406 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
1407 | struct ofpbuf *ofpacts) | |
c2d936a4 | 1408 | { |
7ed58d4a | 1409 | static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(1, 5); |
c2d936a4 | 1410 | struct ofpact_bundle *bundle; |
91fc374a BP |
1411 | uint32_t member_type; |
1412 | size_t members_size, i; | |
c2d936a4 | 1413 | enum ofperr error; |
bd85dac1 | 1414 | |
c2d936a4 BP |
1415 | bundle = ofpact_put_BUNDLE(ofpacts); |
1416 | ||
91fc374a | 1417 | bundle->n_members = ntohs(nab->n_members); |
c2d936a4 BP |
1418 | bundle->basis = ntohs(nab->basis); |
1419 | bundle->fields = ntohs(nab->fields); | |
1420 | bundle->algorithm = ntohs(nab->algorithm); | |
91fc374a BP |
1421 | member_type = ntohl(nab->member_type); |
1422 | members_size = ntohs(nab->len) - sizeof *nab; | |
c2d936a4 BP |
1423 | |
1424 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1425 | if (!flow_hash_fields_valid(bundle->fields)) { | |
7ed58d4a | 1426 | VLOG_WARN_RL(&rll, "unsupported fields %d", (int) bundle->fields); |
91fc374a BP |
1427 | } else if (bundle->n_members > BUNDLE_MAX_MEMBERS) { |
1428 | VLOG_WARN_RL(&rll, "too many members"); | |
c2d936a4 BP |
1429 | } else if (bundle->algorithm != NX_BD_ALG_HRW |
1430 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
7ed58d4a | 1431 | VLOG_WARN_RL(&rll, "unsupported algorithm %d", (int) bundle->algorithm); |
91fc374a BP |
1432 | } else if (member_type != mf_nxm_header(MFF_IN_PORT)) { |
1433 | VLOG_WARN_RL(&rll, "unsupported member type %"PRIu32, member_type); | |
c2d936a4 BP |
1434 | } else { |
1435 | error = 0; | |
1436 | } | |
bd85dac1 | 1437 | |
c2d936a4 | 1438 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
7ed58d4a | 1439 | VLOG_WARN_RL(&rll, "reserved field is nonzero"); |
c2d936a4 BP |
1440 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1441 | } | |
f25d0cf3 | 1442 | |
c2d936a4 | 1443 | if (load) { |
c2d936a4 BP |
1444 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); |
1445 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
5c7c16d8 YHW |
1446 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nab->dst), vl_mff_map, |
1447 | &bundle->dst.field, tlv_bitmap); | |
1448 | if (error) { | |
1449 | return error; | |
04f48a68 | 1450 | } |
f25d0cf3 | 1451 | |
c2d936a4 | 1452 | if (bundle->dst.n_bits < 16) { |
7ed58d4a | 1453 | VLOG_WARN_RL(&rll, "bundle_load action requires at least 16 bit " |
c2d936a4 BP |
1454 | "destination."); |
1455 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1456 | } | |
1457 | } else { | |
1458 | if (nab->ofs_nbits || nab->dst) { | |
7ed58d4a | 1459 | VLOG_WARN_RL(&rll, "bundle action has nonzero reserved fields"); |
c2d936a4 BP |
1460 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1461 | } | |
1462 | } | |
f25d0cf3 | 1463 | |
91fc374a | 1464 | if (members_size < bundle->n_members * sizeof(ovs_be16)) { |
7ed58d4a | 1465 | VLOG_WARN_RL(&rll, "Nicira action %s only has %"PRIuSIZE" bytes " |
91fc374a BP |
1466 | "allocated for members. %"PRIuSIZE" bytes are " |
1467 | "required for %u members.", | |
1468 | load ? "bundle_load" : "bundle", members_size, | |
1469 | bundle->n_members * sizeof(ovs_be16), bundle->n_members); | |
c2d936a4 | 1470 | error = OFPERR_OFPBAC_BAD_LEN; |
5026a263 | 1471 | } else { |
91fc374a | 1472 | for (i = 0; i < bundle->n_members; i++) { |
5026a263 BP |
1473 | ofp_port_t ofp_port |
1474 | = u16_to_ofp(ntohs(((ovs_be16 *)(nab + 1))[i])); | |
1475 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); | |
1476 | bundle = ofpacts->header; | |
1477 | } | |
c2d936a4 | 1478 | } |
f25d0cf3 | 1479 | |
ce058104 | 1480 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1481 | if (!error) { |
1482 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1483 | } | |
1484 | return error; | |
1485 | } | |
f25d0cf3 | 1486 | |
c2d936a4 | 1487 | static enum ofperr |
f3cd3ac7 JS |
1488 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1489 | enum ofp_version ofp_version OVS_UNUSED, | |
1490 | struct ofpbuf *out) | |
c2d936a4 | 1491 | { |
5c7c16d8 | 1492 | return decode_bundle(false, nab, NULL, NULL, out); |
c2d936a4 | 1493 | } |
f25d0cf3 | 1494 | |
c2d936a4 BP |
1495 | static enum ofperr |
1496 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1497 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1498 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1499 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 | 1500 | { |
5c7c16d8 | 1501 | return decode_bundle(true, nab, vl_mff_map, tlv_bitmap, out); |
c2d936a4 | 1502 | } |
c2d967a5 | 1503 | |
c2d936a4 BP |
1504 | static void |
1505 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1506 | enum ofp_version ofp_version OVS_UNUSED, | |
1507 | struct ofpbuf *out) | |
1508 | { | |
91fc374a | 1509 | int members_len = ROUND_UP(2 * bundle->n_members, OFP_ACTION_ALIGN); |
c2d936a4 | 1510 | struct nx_action_bundle *nab; |
91fc374a | 1511 | ovs_be16 *members; |
c2d936a4 | 1512 | size_t i; |
f25d0cf3 | 1513 | |
c2d936a4 BP |
1514 | nab = (bundle->dst.field |
1515 | ? put_NXAST_BUNDLE_LOAD(out) | |
1516 | : put_NXAST_BUNDLE(out)); | |
91fc374a | 1517 | nab->len = htons(ntohs(nab->len) + members_len); |
c2d936a4 BP |
1518 | nab->algorithm = htons(bundle->algorithm); |
1519 | nab->fields = htons(bundle->fields); | |
1520 | nab->basis = htons(bundle->basis); | |
91fc374a BP |
1521 | nab->member_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
1522 | nab->n_members = htons(bundle->n_members); | |
c2d936a4 BP |
1523 | if (bundle->dst.field) { |
1524 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1525 | bundle->dst.n_bits); | |
04f48a68 | 1526 | nab->dst = htonl(nxm_header_from_mff(bundle->dst.field)); |
c2d936a4 | 1527 | } |
f25d0cf3 | 1528 | |
91fc374a BP |
1529 | members = ofpbuf_put_zeros(out, members_len); |
1530 | for (i = 0; i < bundle->n_members; i++) { | |
1531 | members[i] = htons(ofp_to_u16(bundle->members[i])); | |
c2d936a4 BP |
1532 | } |
1533 | } | |
b02475c5 | 1534 | |
cab50449 | 1535 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1536 | parse_BUNDLE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1537 | { |
efefbcae | 1538 | return bundle_parse(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1539 | } |
b02475c5 | 1540 | |
cab50449 | 1541 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1542 | parse_bundle_load(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1543 | { |
efefbcae | 1544 | return bundle_parse_load(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1545 | } |
097d4939 | 1546 | |
c2d936a4 | 1547 | static void |
50f96b10 | 1548 | format_BUNDLE(const struct ofpact_bundle *a, |
efefbcae | 1549 | const struct ofpact_format_params *fp) |
c2d936a4 | 1550 | { |
efefbcae | 1551 | bundle_format(a, fp->port_map, fp->s); |
c2d936a4 | 1552 | } |
ae6f7530 BP |
1553 | |
1554 | static enum ofperr | |
1555 | check_BUNDLE(const struct ofpact_bundle *a, | |
1556 | const struct ofpact_check_params *cp) | |
1557 | { | |
1558 | return bundle_check(a, cp->max_ports, cp->match); | |
1559 | } | |
c2d936a4 BP |
1560 | \f |
1561 | /* Set VLAN actions. */ | |
097d4939 | 1562 | |
c2d936a4 BP |
1563 | static enum ofperr |
1564 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1565 | { | |
1566 | if (vid & ~0xfff) { | |
1567 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1568 | } else { | |
1569 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1570 | vlan_vid->vlan_vid = vid; | |
1571 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1572 | return 0; | |
1573 | } | |
1574 | } | |
0f3f3c3d | 1575 | |
c2d936a4 | 1576 | static enum ofperr |
f3cd3ac7 JS |
1577 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1578 | enum ofp_version ofp_version OVS_UNUSED, | |
1579 | struct ofpbuf *out) | |
c2d936a4 BP |
1580 | { |
1581 | return decode_set_vlan_vid(vid, true, out); | |
1582 | } | |
b676167a | 1583 | |
c2d936a4 | 1584 | static enum ofperr |
f3cd3ac7 JS |
1585 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1586 | enum ofp_version ofp_version OVS_UNUSED, | |
1587 | struct ofpbuf *out) | |
c2d936a4 BP |
1588 | { |
1589 | return decode_set_vlan_vid(vid, false, out); | |
1590 | } | |
29089a54 | 1591 | |
c2d936a4 BP |
1592 | static void |
1593 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1594 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1595 | { | |
1596 | uint16_t vid = vlan_vid->vlan_vid; | |
1597 | ||
1598 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1599 | * for such a feature. */ | |
1600 | if (ofp_version > OFP10_VERSION | |
1601 | && vlan_vid->push_vlan_if_needed | |
1602 | && !vlan_vid->flow_has_vlan) { | |
1603 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1604 | } |
1605 | ||
c2d936a4 BP |
1606 | if (ofp_version == OFP10_VERSION) { |
1607 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1608 | } else if (ofp_version == OFP11_VERSION) { | |
1609 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1610 | } else { | |
128684a6 | 1611 | put_set_field(out, ofp_version, MFF_VLAN_VID, vid | OFPVID12_PRESENT); |
c2d936a4 | 1612 | } |
f25d0cf3 BP |
1613 | } |
1614 | ||
cab50449 | 1615 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1616 | parse_set_vlan_vid(char *arg, bool push_vlan_if_needed, |
1617 | const struct ofpact_parse_params *pp) | |
d01c980f | 1618 | { |
ca287d20 | 1619 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1620 | uint16_t vid; |
1621 | char *error; | |
d01c980f | 1622 | |
c2d936a4 | 1623 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1624 | if (error) { |
1625 | return error; | |
1626 | } | |
1627 | ||
c2d936a4 BP |
1628 | if (vid & ~VLAN_VID_MASK) { |
1629 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1630 | } |
efefbcae | 1631 | vlan_vid = ofpact_put_SET_VLAN_VID(pp->ofpacts); |
c2d936a4 BP |
1632 | vlan_vid->vlan_vid = vid; |
1633 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1634 | return NULL; | |
1635 | } | |
d01c980f | 1636 | |
cab50449 | 1637 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1638 | parse_SET_VLAN_VID(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1639 | { |
efefbcae | 1640 | return parse_set_vlan_vid(arg, false, pp); |
d01c980f BP |
1641 | } |
1642 | ||
c2d936a4 | 1643 | static void |
50f96b10 | 1644 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, |
efefbcae | 1645 | const struct ofpact_format_params *fp) |
c2d936a4 | 1646 | { |
efefbcae | 1647 | ds_put_format(fp->s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1648 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1649 | colors.end, a->vlan_vid); |
c2d936a4 | 1650 | } |
ae6f7530 BP |
1651 | |
1652 | static enum ofperr | |
1653 | check_SET_VLAN_VID(struct ofpact_vlan_vid *a, struct ofpact_check_params *cp) | |
1654 | { | |
1655 | /* Remember if we saw a vlan tag in the flow to aid translating to OpenFlow | |
1656 | * 1.1+ if need be. */ | |
1657 | ovs_be16 *tci = &cp->match->flow.vlans[0].tci; | |
1658 | a->flow_has_vlan = (*tci & htons(VLAN_CFI)) != 0; | |
1659 | if (!a->flow_has_vlan && !a->push_vlan_if_needed) { | |
1660 | inconsistent_match(&cp->usable_protocols); | |
1661 | } | |
1662 | ||
1663 | /* Temporarily mark that we have a vlan tag. */ | |
1664 | *tci |= htons(VLAN_CFI); | |
1665 | ||
1666 | return 0; | |
1667 | } | |
c2d936a4 BP |
1668 | \f |
1669 | /* Set PCP actions. */ | |
e3f8f887 | 1670 | |
c2d936a4 BP |
1671 | static enum ofperr |
1672 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1673 | { |
c2d936a4 BP |
1674 | if (pcp & ~7) { |
1675 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1676 | } else { | |
1677 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1678 | vlan_pcp->vlan_pcp = pcp; | |
1679 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1680 | return 0; | |
1681 | } | |
f25d0cf3 BP |
1682 | } |
1683 | ||
c2d936a4 | 1684 | static enum ofperr |
f3cd3ac7 JS |
1685 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1686 | enum ofp_version ofp_version OVS_UNUSED, | |
1687 | struct ofpbuf *out) | |
f25d0cf3 | 1688 | { |
c2d936a4 | 1689 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1690 | } |
1691 | ||
c2d936a4 | 1692 | static enum ofperr |
f3cd3ac7 JS |
1693 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1694 | enum ofp_version ofp_version OVS_UNUSED, | |
1695 | struct ofpbuf *out) | |
c2d936a4 BP |
1696 | { |
1697 | return decode_set_vlan_pcp(pcp, false, out); | |
1698 | } | |
f25d0cf3 | 1699 | |
699dddf1 | 1700 | static void |
c2d936a4 BP |
1701 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1702 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1703 | { |
c2d936a4 BP |
1704 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1705 | ||
1706 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1707 | * for such a feature. */ | |
1708 | if (ofp_version > OFP10_VERSION | |
1709 | && vlan_pcp->push_vlan_if_needed | |
1710 | && !vlan_pcp->flow_has_vlan) { | |
1711 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1712 | } | |
699dddf1 | 1713 | |
c2d936a4 BP |
1714 | if (ofp_version == OFP10_VERSION) { |
1715 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1716 | } else if (ofp_version == OFP11_VERSION) { | |
1717 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1718 | } else { | |
128684a6 | 1719 | put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); |
699dddf1 BP |
1720 | } |
1721 | } | |
1722 | ||
cab50449 | 1723 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1724 | parse_set_vlan_pcp(char *arg, bool push_vlan_if_needed, |
1725 | const struct ofpact_parse_params *pp) | |
f25d0cf3 | 1726 | { |
c2d936a4 BP |
1727 | struct ofpact_vlan_pcp *vlan_pcp; |
1728 | uint8_t pcp; | |
1729 | char *error; | |
e3f8f887 | 1730 | |
c2d936a4 BP |
1731 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1732 | if (error) { | |
699dddf1 | 1733 | return error; |
f25d0cf3 BP |
1734 | } |
1735 | ||
c2d936a4 BP |
1736 | if (pcp & ~7) { |
1737 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1738 | } | |
efefbcae | 1739 | vlan_pcp = ofpact_put_SET_VLAN_PCP(pp->ofpacts); |
c2d936a4 BP |
1740 | vlan_pcp->vlan_pcp = pcp; |
1741 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1742 | return NULL; | |
1743 | } | |
1744 | ||
cab50449 | 1745 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1746 | parse_SET_VLAN_PCP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1747 | { |
efefbcae | 1748 | return parse_set_vlan_pcp(arg, false, pp); |
c2d936a4 BP |
1749 | } |
1750 | ||
1751 | static void | |
50f96b10 | 1752 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, |
efefbcae | 1753 | const struct ofpact_format_params *fp) |
c2d936a4 | 1754 | { |
efefbcae | 1755 | ds_put_format(fp->s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1756 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1757 | colors.end, a->vlan_pcp); |
c2d936a4 | 1758 | } |
ae6f7530 BP |
1759 | |
1760 | static enum ofperr | |
1761 | check_SET_VLAN_PCP(struct ofpact_vlan_pcp *a, struct ofpact_check_params *cp) | |
1762 | { | |
1763 | /* Remember if we saw a vlan tag in the flow to aid translating to OpenFlow | |
1764 | * 1.1+ if need be. */ | |
1765 | ovs_be16 *tci = &cp->match->flow.vlans[0].tci; | |
1766 | a->flow_has_vlan = (*tci & htons(VLAN_CFI)) != 0; | |
1767 | if (!a->flow_has_vlan && !a->push_vlan_if_needed) { | |
1768 | inconsistent_match(&cp->usable_protocols); | |
1769 | } | |
1770 | ||
1771 | /* Temporarily mark that we have a vlan tag. */ | |
1772 | *tci |= htons(VLAN_CFI); | |
1773 | ||
1774 | return 0; | |
1775 | } | |
c2d936a4 BP |
1776 | \f |
1777 | /* Strip VLAN actions. */ | |
1778 | ||
1779 | static enum ofperr | |
1780 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1781 | { | |
1782 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1783 | return 0; |
1784 | } | |
1785 | ||
8f2cded4 | 1786 | static enum ofperr |
c2d936a4 | 1787 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1788 | { |
c2d936a4 BP |
1789 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1790 | return 0; | |
1791 | } | |
f25d0cf3 | 1792 | |
c2d936a4 BP |
1793 | static void |
1794 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1795 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1796 | { | |
1797 | if (ofp_version == OFP10_VERSION) { | |
1798 | put_OFPAT10_STRIP_VLAN(out); | |
1799 | } else { | |
1800 | put_OFPAT11_POP_VLAN(out); | |
1801 | } | |
1802 | } | |
f25d0cf3 | 1803 | |
cab50449 | 1804 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1805 | parse_STRIP_VLAN(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 1806 | { |
efefbcae | 1807 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; |
c2d936a4 BP |
1808 | return NULL; |
1809 | } | |
1810 | ||
cab50449 | 1811 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1812 | parse_pop_vlan(const struct ofpact_parse_params *pp) |
c2d936a4 | 1813 | { |
efefbcae | 1814 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
c2d936a4 BP |
1815 | return NULL; |
1816 | } | |
1817 | ||
1818 | static void | |
50f96b10 | 1819 | format_STRIP_VLAN(const struct ofpact_null *a, |
efefbcae | 1820 | const struct ofpact_format_params *fp) |
c2d936a4 | 1821 | { |
efefbcae | 1822 | ds_put_format(fp->s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
b1c5bf1f QM |
1823 | ? "%spop_vlan%s" |
1824 | : "%sstrip_vlan%s"), | |
1825 | colors.value, colors.end); | |
c2d936a4 | 1826 | } |
ae6f7530 BP |
1827 | |
1828 | static enum ofperr | |
1829 | check_STRIP_VLAN(const struct ofpact_null *a OVS_UNUSED, | |
1830 | struct ofpact_check_params *cp) | |
1831 | { | |
1832 | if (!(cp->match->flow.vlans[0].tci & htons(VLAN_CFI))) { | |
1833 | inconsistent_match(&cp->usable_protocols); | |
1834 | } | |
1835 | flow_pop_vlan(&cp->match->flow, NULL); | |
1836 | return 0; | |
1837 | } | |
c2d936a4 BP |
1838 | \f |
1839 | /* Push VLAN action. */ | |
1840 | ||
1841 | static enum ofperr | |
f3cd3ac7 JS |
1842 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1843 | enum ofp_version ofp_version OVS_UNUSED, | |
1844 | struct ofpbuf *out) | |
c2d936a4 | 1845 | { |
f0fb825a EG |
1846 | struct ofpact_push_vlan *push_vlan; |
1847 | if (!eth_type_vlan(eth_type)) { | |
c2d936a4 | 1848 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
f25d0cf3 | 1849 | } |
f0fb825a EG |
1850 | push_vlan = ofpact_put_PUSH_VLAN(out); |
1851 | push_vlan->ethertype = eth_type; | |
c2d936a4 BP |
1852 | return 0; |
1853 | } | |
f25d0cf3 | 1854 | |
c2d936a4 | 1855 | static void |
f0fb825a | 1856 | encode_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
c2d936a4 BP |
1857 | enum ofp_version ofp_version, struct ofpbuf *out) |
1858 | { | |
1859 | if (ofp_version == OFP10_VERSION) { | |
1860 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1861 | * follow this action. */ | |
1862 | } else { | |
f0fb825a | 1863 | put_OFPAT11_PUSH_VLAN(out, push_vlan->ethertype); |
f25d0cf3 | 1864 | } |
c2d936a4 | 1865 | } |
f25d0cf3 | 1866 | |
cab50449 | 1867 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1868 | parse_PUSH_VLAN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1869 | { |
f0fb825a | 1870 | struct ofpact_push_vlan *push_vlan; |
c2d936a4 BP |
1871 | uint16_t ethertype; |
1872 | char *error; | |
1873 | ||
efefbcae | 1874 | *pp->usable_protocols &= OFPUTIL_P_OF11_UP; |
c2d936a4 | 1875 | error = str_to_u16(arg, "ethertype", ðertype); |
4cceacb9 | 1876 | if (error) { |
4cceacb9 JS |
1877 | return error; |
1878 | } | |
1879 | ||
f0fb825a | 1880 | if (!eth_type_vlan(htons(ethertype))) { |
c2d936a4 | 1881 | return xasprintf("%s: not a valid VLAN ethertype", arg); |
f25d0cf3 | 1882 | } |
efefbcae | 1883 | push_vlan = ofpact_put_PUSH_VLAN(pp->ofpacts); |
f0fb825a | 1884 | push_vlan->ethertype = htons(ethertype); |
c2d936a4 | 1885 | return NULL; |
d01c980f BP |
1886 | } |
1887 | ||
c2d936a4 | 1888 | static void |
50f96b10 | 1889 | format_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
efefbcae | 1890 | const struct ofpact_format_params *fp) |
8f2cded4 | 1891 | { |
efefbcae | 1892 | ds_put_format(fp->s, "%spush_vlan:%s%#"PRIx16, |
f0fb825a | 1893 | colors.param, colors.end, ntohs(push_vlan->ethertype)); |
8f2cded4 | 1894 | } |
ae6f7530 BP |
1895 | |
1896 | static enum ofperr | |
1897 | check_PUSH_VLAN(const struct ofpact_push_vlan *a OVS_UNUSED, | |
1898 | struct ofpact_check_params *cp) | |
1899 | { | |
1900 | struct flow *flow = &cp->match->flow; | |
1901 | if (flow->vlans[FLOW_MAX_VLAN_HEADERS - 1].tci & htons(VLAN_CFI)) { | |
1902 | /* Support maximum (FLOW_MAX_VLAN_HEADERS) VLAN headers. */ | |
1903 | return OFPERR_OFPBAC_BAD_TAG; | |
1904 | } | |
1905 | /* Temporary mark that we have a vlan tag. */ | |
1906 | flow_push_vlan_uninit(flow, NULL); | |
1907 | flow->vlans[0].tci |= htons(VLAN_CFI); | |
1908 | return 0; | |
1909 | } | |
d01c980f | 1910 | \f |
c2d936a4 BP |
1911 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1912 | struct ofp_action_dl_addr { | |
1913 | ovs_be16 type; /* Type. */ | |
1914 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1915 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1916 | uint8_t pad[6]; |
1917 | }; | |
1918 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1919 | |
d01c980f | 1920 | static enum ofperr |
c2d936a4 | 1921 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1922 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1923 | struct ofpbuf *out) |
d01c980f | 1924 | { |
74ff3298 | 1925 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1926 | return 0; |
1927 | } | |
3ddcaf2d | 1928 | |
c2d936a4 BP |
1929 | static enum ofperr |
1930 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1931 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1932 | struct ofpbuf *out) |
1933 | { | |
74ff3298 | 1934 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1935 | return 0; |
1936 | } | |
d01c980f | 1937 | |
c2d936a4 BP |
1938 | static void |
1939 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1940 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1941 | struct ofpbuf *out) | |
1942 | { | |
c2d936a4 BP |
1943 | if (ofp_version < OFP12_VERSION) { |
1944 | struct ofp_action_dl_addr *oada; | |
1945 | ||
1946 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1947 | oada->dl_addr = mac->mac; |
c2d936a4 | 1948 | } else { |
128684a6 | 1949 | put_set_field(out, ofp_version, field, eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1950 | } |
1951 | } | |
1952 | ||
c2d936a4 BP |
1953 | static void |
1954 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1955 | struct ofpbuf *out) | |
b2dd70be | 1956 | { |
c2d936a4 BP |
1957 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1958 | out); | |
b2dd70be | 1959 | |
c2d936a4 | 1960 | } |
b2dd70be | 1961 | |
c2d936a4 BP |
1962 | static void |
1963 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1964 | enum ofp_version ofp_version, | |
1965 | struct ofpbuf *out) | |
1966 | { | |
1967 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1968 | out); | |
b2dd70be | 1969 | |
c2d936a4 | 1970 | } |
b2dd70be | 1971 | |
cab50449 | 1972 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1973 | parse_SET_ETH_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1974 | { |
efefbcae | 1975 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(pp->ofpacts)->mac); |
c2d936a4 BP |
1976 | } |
1977 | ||
cab50449 | 1978 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1979 | parse_SET_ETH_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1980 | { |
efefbcae | 1981 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(pp->ofpacts)->mac); |
b2dd70be JR |
1982 | } |
1983 | ||
1984 | static void | |
50f96b10 | 1985 | format_SET_ETH_SRC(const struct ofpact_mac *a, |
efefbcae | 1986 | const struct ofpact_format_params *fp) |
b2dd70be | 1987 | { |
efefbcae | 1988 | ds_put_format(fp->s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1989 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 | 1990 | } |
b2dd70be | 1991 | |
c2d936a4 | 1992 | static void |
50f96b10 | 1993 | format_SET_ETH_DST(const struct ofpact_mac *a, |
efefbcae | 1994 | const struct ofpact_format_params *fp) |
c2d936a4 | 1995 | { |
efefbcae | 1996 | ds_put_format(fp->s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1997 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 | 1998 | } |
ae6f7530 BP |
1999 | |
2000 | static enum ofperr | |
2001 | check_SET_ETH_SRC(const struct ofpact_mac *a OVS_UNUSED, | |
2002 | const struct ofpact_check_params *cp OVS_UNUSED) | |
2003 | { | |
2004 | return 0; | |
2005 | } | |
2006 | ||
2007 | static enum ofperr | |
2008 | check_SET_ETH_DST(const struct ofpact_mac *a OVS_UNUSED, | |
2009 | const struct ofpact_check_params *cp OVS_UNUSED) | |
2010 | { | |
2011 | return 0; | |
2012 | } | |
c2d936a4 BP |
2013 | \f |
2014 | /* Set IPv4 address actions. */ | |
b2dd70be | 2015 | |
c2d936a4 | 2016 | static enum ofperr |
f3cd3ac7 JS |
2017 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
2018 | enum ofp_version ofp_version OVS_UNUSED, | |
2019 | struct ofpbuf *out) | |
c2d936a4 BP |
2020 | { |
2021 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
2022 | return 0; | |
b2dd70be JR |
2023 | } |
2024 | ||
c2d936a4 | 2025 | static enum ofperr |
f3cd3ac7 JS |
2026 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
2027 | enum ofp_version ofp_version OVS_UNUSED, | |
2028 | struct ofpbuf *out) | |
b2dd70be | 2029 | { |
c2d936a4 BP |
2030 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
2031 | return 0; | |
2032 | } | |
b2dd70be | 2033 | |
c2d936a4 BP |
2034 | static void |
2035 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
2036 | enum ofp_version ofp_version, | |
2037 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
2038 | struct ofpbuf *out) | |
2039 | { | |
2040 | ovs_be32 addr = ipv4->ipv4; | |
2041 | if (ofp_version < OFP12_VERSION) { | |
2042 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 2043 | } else { |
128684a6 | 2044 | put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
2045 | } |
2046 | } | |
2047 | ||
a6fd70bb | 2048 | static void |
c2d936a4 BP |
2049 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
2050 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 2051 | { |
c2d936a4 BP |
2052 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
2053 | out); | |
2054 | } | |
a6fd70bb | 2055 | |
c2d936a4 BP |
2056 | static void |
2057 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
2058 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2059 | { | |
2060 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
2061 | out); | |
2062 | } | |
a6fd70bb | 2063 | |
cab50449 | 2064 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2065 | parse_SET_IPV4_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2066 | { |
efefbcae | 2067 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(pp->ofpacts)->ipv4); |
c2d936a4 | 2068 | } |
a6fd70bb | 2069 | |
cab50449 | 2070 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2071 | parse_SET_IPV4_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2072 | { |
efefbcae | 2073 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(pp->ofpacts)->ipv4); |
c2d936a4 | 2074 | } |
a6fd70bb | 2075 | |
c2d936a4 | 2076 | static void |
50f96b10 | 2077 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, |
efefbcae | 2078 | const struct ofpact_format_params *fp) |
c2d936a4 | 2079 | { |
efefbcae | 2080 | ds_put_format(fp->s, "%smod_nw_src:%s"IP_FMT, |
b1c5bf1f | 2081 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 | 2082 | } |
097d4939 | 2083 | |
c2d936a4 | 2084 | static void |
50f96b10 | 2085 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, |
efefbcae | 2086 | const struct ofpact_format_params *fp) |
c2d936a4 | 2087 | { |
efefbcae | 2088 | ds_put_format(fp->s, "%smod_nw_dst:%s"IP_FMT, |
b1c5bf1f | 2089 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 | 2090 | } |
ae6f7530 BP |
2091 | |
2092 | static enum ofperr | |
2093 | check_set_ipv4(struct ofpact_check_params *cp) | |
2094 | { | |
2095 | ovs_be16 dl_type = get_dl_type(&cp->match->flow); | |
2096 | if (dl_type != htons(ETH_TYPE_IP)) { | |
2097 | inconsistent_match(&cp->usable_protocols); | |
2098 | } | |
2099 | return 0; | |
2100 | } | |
2101 | ||
2102 | static enum ofperr | |
2103 | check_SET_IPV4_SRC(const struct ofpact_ipv4 *a OVS_UNUSED, | |
2104 | struct ofpact_check_params *cp) | |
2105 | { | |
2106 | return check_set_ipv4(cp); | |
2107 | } | |
2108 | ||
2109 | static enum ofperr | |
2110 | check_SET_IPV4_DST(const struct ofpact_ipv4 *a OVS_UNUSED, | |
2111 | struct ofpact_check_params *cp) | |
2112 | { | |
2113 | return check_set_ipv4(cp); | |
2114 | } | |
c2d936a4 BP |
2115 | \f |
2116 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 2117 | |
c2d936a4 | 2118 | static enum ofperr |
f3cd3ac7 JS |
2119 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
2120 | enum ofp_version ofp_version OVS_UNUSED, | |
2121 | struct ofpbuf *out) | |
c2d936a4 BP |
2122 | { |
2123 | if (dscp & ~IP_DSCP_MASK) { | |
2124 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2125 | } else { | |
2126 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
2127 | return 0; | |
a6fd70bb JR |
2128 | } |
2129 | } | |
2130 | ||
a6fd70bb | 2131 | static void |
c2d936a4 BP |
2132 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
2133 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 2134 | { |
c2d936a4 BP |
2135 | if (ofp_version < OFP12_VERSION) { |
2136 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
2137 | } else { | |
128684a6 | 2138 | put_set_field(out, ofp_version, MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); |
c2d936a4 BP |
2139 | } |
2140 | } | |
a6fd70bb | 2141 | |
cab50449 | 2142 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
2143 | parse_SET_IP_DSCP(char *arg, const struct ofpact_parse_params *pp) |
2144 | ||
c2d936a4 BP |
2145 | { |
2146 | uint8_t tos; | |
2147 | char *error; | |
a6fd70bb | 2148 | |
c2d936a4 BP |
2149 | error = str_to_u8(arg, "TOS", &tos); |
2150 | if (error) { | |
2151 | return error; | |
2152 | } | |
a6fd70bb | 2153 | |
c2d936a4 BP |
2154 | if (tos & ~IP_DSCP_MASK) { |
2155 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 2156 | } |
efefbcae | 2157 | ofpact_put_SET_IP_DSCP(pp->ofpacts)->dscp = tos; |
c2d936a4 | 2158 | return NULL; |
a6fd70bb JR |
2159 | } |
2160 | ||
b2dd70be | 2161 | static void |
50f96b10 | 2162 | format_SET_IP_DSCP(const struct ofpact_dscp *a, |
efefbcae | 2163 | const struct ofpact_format_params *fp) |
b2dd70be | 2164 | { |
efefbcae BP |
2165 | ds_put_format(fp->s, "%smod_nw_tos:%s%d", |
2166 | colors.param, colors.end, a->dscp); | |
c2d936a4 | 2167 | } |
ae6f7530 BP |
2168 | |
2169 | static enum ofperr | |
2170 | check_set_ip(struct ofpact_check_params *cp) | |
2171 | { | |
2172 | if (!is_ip_any(&cp->match->flow)) { | |
2173 | inconsistent_match(&cp->usable_protocols); | |
2174 | } | |
2175 | return 0; | |
2176 | } | |
2177 | ||
2178 | static enum ofperr | |
2179 | check_SET_IP_DSCP(const struct ofpact_dscp *a OVS_UNUSED, | |
2180 | struct ofpact_check_params *cp) | |
2181 | { | |
2182 | return check_set_ip(cp); | |
2183 | } | |
c2d936a4 BP |
2184 | \f |
2185 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 2186 | |
c2d936a4 | 2187 | static enum ofperr |
f3cd3ac7 JS |
2188 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
2189 | enum ofp_version ofp_version OVS_UNUSED, | |
2190 | struct ofpbuf *out) | |
c2d936a4 BP |
2191 | { |
2192 | if (ecn & ~IP_ECN_MASK) { | |
2193 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 2194 | } else { |
c2d936a4 BP |
2195 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
2196 | return 0; | |
b2dd70be JR |
2197 | } |
2198 | } | |
2199 | ||
c2d936a4 BP |
2200 | static void |
2201 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
2202 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 2203 | { |
c2d936a4 BP |
2204 | uint8_t ecn = ip_ecn->ecn; |
2205 | if (ofp_version == OFP10_VERSION) { | |
4b684612 BP |
2206 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_ECN), |
2207 | .ofs = 0, .n_bits = 2 }; | |
2208 | put_reg_load(out, &dst, ecn); | |
c2d936a4 BP |
2209 | } else if (ofp_version == OFP11_VERSION) { |
2210 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
2211 | } else { | |
128684a6 | 2212 | put_set_field(out, ofp_version, MFF_IP_ECN, ecn); |
c2d936a4 BP |
2213 | } |
2214 | } | |
d01c980f | 2215 | |
cab50449 | 2216 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2217 | parse_SET_IP_ECN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2218 | { |
2219 | uint8_t ecn; | |
2220 | char *error; | |
d01c980f | 2221 | |
c2d936a4 | 2222 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
2223 | if (error) { |
2224 | return error; | |
2225 | } | |
2226 | ||
c2d936a4 BP |
2227 | if (ecn & ~IP_ECN_MASK) { |
2228 | return xasprintf("%s: not a valid ECN", arg); | |
2229 | } | |
efefbcae | 2230 | ofpact_put_SET_IP_ECN(pp->ofpacts)->ecn = ecn; |
c2d936a4 | 2231 | return NULL; |
d01c980f BP |
2232 | } |
2233 | ||
c2d936a4 | 2234 | static void |
50f96b10 | 2235 | format_SET_IP_ECN(const struct ofpact_ecn *a, |
efefbcae | 2236 | const struct ofpact_format_params *fp) |
c2d936a4 | 2237 | { |
efefbcae | 2238 | ds_put_format(fp->s, "%smod_nw_ecn:%s%d", |
b1c5bf1f | 2239 | colors.param, colors.end, a->ecn); |
c2d936a4 | 2240 | } |
ae6f7530 BP |
2241 | |
2242 | static enum ofperr | |
2243 | check_SET_IP_ECN(const struct ofpact_ecn *a OVS_UNUSED, | |
2244 | struct ofpact_check_params *cp) | |
2245 | { | |
2246 | return check_set_ip(cp); | |
2247 | } | |
c2d936a4 BP |
2248 | \f |
2249 | /* Set IPv4/v6 TTL actions. */ | |
2250 | ||
d01c980f | 2251 | static enum ofperr |
f3cd3ac7 JS |
2252 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
2253 | enum ofp_version ofp_version OVS_UNUSED, | |
2254 | struct ofpbuf *out) | |
d01c980f | 2255 | { |
c2d936a4 BP |
2256 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | static void | |
2261 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
2262 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2263 | { | |
2264 | if (ofp_version >= OFP11_VERSION) { | |
2265 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
2266 | } else { | |
56a91749 BP |
2267 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_TTL), |
2268 | .ofs = 0, .n_bits = 8 }; | |
2269 | put_reg_load(out, &dst, ttl->ttl); | |
c2d936a4 BP |
2270 | } |
2271 | } | |
2272 | ||
cab50449 | 2273 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
2274 | parse_SET_IP_TTL(char *arg, const struct ofpact_parse_params *pp) |
2275 | ||
c2d936a4 BP |
2276 | { |
2277 | uint8_t ttl; | |
2278 | char *error; | |
d01c980f | 2279 | |
c2d936a4 | 2280 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
2281 | if (error) { |
2282 | return error; | |
2283 | } | |
2284 | ||
efefbcae | 2285 | ofpact_put_SET_IP_TTL(pp->ofpacts)->ttl = ttl; |
c2d936a4 BP |
2286 | return NULL; |
2287 | } | |
d01c980f | 2288 | |
c2d936a4 | 2289 | static void |
50f96b10 | 2290 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, |
efefbcae | 2291 | const struct ofpact_format_params *fp) |
c2d936a4 | 2292 | { |
efefbcae BP |
2293 | ds_put_format(fp->s, "%smod_nw_ttl:%s%d", |
2294 | colors.param, colors.end, a->ttl); | |
c2d936a4 | 2295 | } |
ae6f7530 BP |
2296 | |
2297 | static enum ofperr | |
2298 | check_SET_IP_TTL(const struct ofpact_ip_ttl *a OVS_UNUSED, | |
2299 | struct ofpact_check_params *cp) | |
2300 | { | |
2301 | return check_set_ip(cp); | |
2302 | } | |
c2d936a4 BP |
2303 | \f |
2304 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 2305 | |
c2d936a4 | 2306 | static enum ofperr |
f3cd3ac7 JS |
2307 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
2308 | enum ofp_version ofp_version OVS_UNUSED, | |
2309 | struct ofpbuf *out) | |
c2d936a4 BP |
2310 | { |
2311 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
2312 | return 0; | |
2313 | } | |
d01c980f | 2314 | |
c2d936a4 | 2315 | static enum ofperr |
f3cd3ac7 JS |
2316 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
2317 | enum ofp_version ofp_version OVS_UNUSED, | |
2318 | struct ofpbuf *out) | |
c2d936a4 BP |
2319 | { |
2320 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
2321 | return 0; | |
2322 | } | |
d01c980f | 2323 | |
c2d936a4 BP |
2324 | static void |
2325 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
2326 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
2327 | enum mf_field_id field, struct ofpbuf *out) | |
2328 | { | |
2329 | uint16_t port = l4_port->port; | |
3e34fbdd | 2330 | |
c2d936a4 | 2331 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
128684a6 | 2332 | put_set_field(out, ofp_version, field, port); |
c2d936a4 BP |
2333 | } else { |
2334 | ofpact_put_raw(out, ofp_version, raw, port); | |
2335 | } | |
2336 | } | |
8e61c110 | 2337 | |
c2d936a4 BP |
2338 | static void |
2339 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
2340 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2341 | { | |
2342 | uint8_t proto = l4_port->flow_ip_proto; | |
2343 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2344 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2345 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2346 | : MFF_N_IDS); | |
276c4e7a | 2347 | |
c2d936a4 BP |
2348 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
2349 | } | |
d01c980f | 2350 | |
c2d936a4 BP |
2351 | static void |
2352 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
2353 | enum ofp_version ofp_version, | |
2354 | struct ofpbuf *out) | |
2355 | { | |
2356 | uint8_t proto = l4_port->flow_ip_proto; | |
2357 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2358 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2359 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2360 | : MFF_N_IDS); | |
d01c980f | 2361 | |
c2d936a4 BP |
2362 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2363 | } | |
7bcb1506 | 2364 | |
cab50449 | 2365 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2366 | parse_SET_L4_SRC_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2367 | { |
2368 | return str_to_u16(arg, "source port", | |
efefbcae | 2369 | &ofpact_put_SET_L4_SRC_PORT(pp->ofpacts)->port); |
c2d936a4 | 2370 | } |
d01c980f | 2371 | |
cab50449 | 2372 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2373 | parse_SET_L4_DST_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2374 | { |
2375 | return str_to_u16(arg, "destination port", | |
efefbcae | 2376 | &ofpact_put_SET_L4_DST_PORT(pp->ofpacts)->port); |
c2d936a4 | 2377 | } |
d01c980f | 2378 | |
c2d936a4 | 2379 | static void |
50f96b10 | 2380 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2381 | const struct ofpact_format_params *fp) |
c2d936a4 | 2382 | { |
efefbcae BP |
2383 | ds_put_format(fp->s, "%smod_tp_src:%s%d", |
2384 | colors.param, colors.end, a->port); | |
c2d936a4 | 2385 | } |
d01c980f | 2386 | |
c2d936a4 | 2387 | static void |
50f96b10 | 2388 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2389 | const struct ofpact_format_params *fp) |
c2d936a4 | 2390 | { |
efefbcae BP |
2391 | ds_put_format(fp->s, "%smod_tp_dst:%s%d", |
2392 | colors.param, colors.end, a->port); | |
c2d936a4 | 2393 | } |
ae6f7530 BP |
2394 | |
2395 | static enum ofperr | |
2396 | check_set_l4_port(struct ofpact_l4_port *a, struct ofpact_check_params *cp) | |
2397 | { | |
2398 | const struct flow *flow = &cp->match->flow; | |
2399 | if (!is_ip_any(flow) | |
2400 | || flow->nw_frag & FLOW_NW_FRAG_LATER | |
2401 | || (flow->nw_proto != IPPROTO_TCP && | |
2402 | flow->nw_proto != IPPROTO_UDP && | |
2403 | flow->nw_proto != IPPROTO_SCTP)) { | |
2404 | inconsistent_match(&cp->usable_protocols); | |
2405 | } | |
2406 | ||
2407 | /* Note the transport protocol in use, to allow this action to be converted | |
2408 | * to an OF1.2 set_field action later if necessary. */ | |
2409 | a->flow_ip_proto = flow->nw_proto; | |
2410 | ||
2411 | return 0; | |
2412 | } | |
2413 | ||
2414 | static enum ofperr | |
2415 | check_SET_L4_SRC_PORT(struct ofpact_l4_port *a, struct ofpact_check_params *cp) | |
2416 | { | |
2417 | return check_set_l4_port(a, cp); | |
2418 | } | |
2419 | ||
2420 | static enum ofperr | |
2421 | check_SET_L4_DST_PORT(struct ofpact_l4_port *a, struct ofpact_check_params *cp) | |
2422 | { | |
2423 | return check_set_l4_port(a, cp); | |
2424 | } | |
c2d936a4 | 2425 | \f |
73178f20 BP |
2426 | /* Action structure for OFPAT_COPY_FIELD. */ |
2427 | struct ofp15_action_copy_field { | |
2428 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2429 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2430 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2431 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2432 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2433 | uint8_t pad[2]; |
f13cdd73 BP |
2434 | /* Followed by: |
2435 | * - OXM header for source field. | |
2436 | * - OXM header for destination field. | |
2437 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2438 | * The "pad2" member is the beginning of the above. */ |
2439 | uint8_t pad2[4]; | |
73178f20 | 2440 | }; |
f13cdd73 | 2441 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2442 | |
914624f8 BP |
2443 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2444 | struct onf_action_copy_field { | |
2445 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2446 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2447 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2448 | ovs_be16 exp_type; /* 3200. */ | |
2449 | uint8_t pad[2]; /* Not used. */ | |
2450 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2451 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2452 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2453 | uint8_t pad2[2]; /* Not used. */ | |
2454 | /* Followed by: | |
2455 | * - OXM header for source field. | |
2456 | * - OXM header for destination field. | |
2457 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2458 | * The "pad3" member is the beginning of the above. */ | |
2459 | uint8_t pad3[4]; /* Not used. */ | |
2460 | }; | |
2461 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2462 | ||
c2d936a4 BP |
2463 | /* Action structure for NXAST_REG_MOVE. |
2464 | * | |
2465 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2466 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2467 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2468 | * the next most significant bit, and so on. | |
2469 | * | |
2470 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2471 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2472 | * matching; it uses the actual value of a field.) | |
2473 | * | |
2474 | * The following nxm_header values are potentially acceptable as 'src': | |
2475 | * | |
2476 | * - NXM_OF_IN_PORT | |
2477 | * - NXM_OF_ETH_DST | |
2478 | * - NXM_OF_ETH_SRC | |
2479 | * - NXM_OF_ETH_TYPE | |
2480 | * - NXM_OF_VLAN_TCI | |
2481 | * - NXM_OF_IP_TOS | |
2482 | * - NXM_OF_IP_PROTO | |
2483 | * - NXM_OF_IP_SRC | |
2484 | * - NXM_OF_IP_DST | |
2485 | * - NXM_OF_TCP_SRC | |
2486 | * - NXM_OF_TCP_DST | |
2487 | * - NXM_OF_UDP_SRC | |
2488 | * - NXM_OF_UDP_DST | |
2489 | * - NXM_OF_ICMP_TYPE | |
2490 | * - NXM_OF_ICMP_CODE | |
2491 | * - NXM_OF_ARP_OP | |
2492 | * - NXM_OF_ARP_SPA | |
2493 | * - NXM_OF_ARP_TPA | |
2494 | * - NXM_NX_TUN_ID | |
2495 | * - NXM_NX_ARP_SHA | |
2496 | * - NXM_NX_ARP_THA | |
2497 | * - NXM_NX_ICMPV6_TYPE | |
2498 | * - NXM_NX_ICMPV6_CODE | |
2499 | * - NXM_NX_ND_SLL | |
2500 | * - NXM_NX_ND_TLL | |
2501 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2502 | * - NXM_NX_PKT_MARK | |
2503 | * - NXM_NX_TUN_IPV4_SRC | |
2504 | * - NXM_NX_TUN_IPV4_DST | |
2505 | * | |
2506 | * The following nxm_header values are potentially acceptable as 'dst': | |
2507 | * | |
2508 | * - NXM_OF_ETH_DST | |
2509 | * - NXM_OF_ETH_SRC | |
2510 | * - NXM_OF_IP_TOS | |
2511 | * - NXM_OF_IP_SRC | |
2512 | * - NXM_OF_IP_DST | |
2513 | * - NXM_OF_TCP_SRC | |
2514 | * - NXM_OF_TCP_DST | |
2515 | * - NXM_OF_UDP_SRC | |
2516 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2517 | * - NXM_OF_ICMP_TYPE |
2518 | * - NXM_OF_ICMP_CODE | |
2519 | * - NXM_NX_ICMPV6_TYPE | |
2520 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2521 | * - NXM_NX_ARP_SHA |
2522 | * - NXM_NX_ARP_THA | |
2523 | * - NXM_OF_ARP_OP | |
2524 | * - NXM_OF_ARP_SPA | |
2525 | * - NXM_OF_ARP_TPA | |
2526 | * Modifying any of the above fields changes the corresponding packet | |
2527 | * header. | |
2528 | * | |
2529 | * - NXM_OF_IN_PORT | |
2530 | * | |
2531 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2532 | * | |
2533 | * - NXM_NX_PKT_MARK | |
2534 | * | |
2535 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2536 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2537 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2538 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2539 | * to the field's new value (with the CFI bit masked out). | |
2540 | * | |
2541 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2542 | * any of these values modifies the corresponding tunnel header field used | |
2543 | * for the packet's next tunnel encapsulation, if allowed by the | |
2544 | * configuration of the output tunnel port. | |
2545 | * | |
2546 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2547 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2548 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2549 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2550 | * | |
2551 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2552 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2553 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2554 | * | |
2555 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2556 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2557 | * temporary buffer copied to 'dst'. | |
2558 | */ | |
2559 | struct nx_action_reg_move { | |
2560 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2561 | ovs_be16 len; /* Length is 24. */ | |
2562 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2563 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2564 | ovs_be16 n_bits; /* Number of bits. */ | |
2565 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2566 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2567 | /* Followed by: |
2568 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2569 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2570 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2571 | }; |
bad8a439 | 2572 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2573 | |
73178f20 | 2574 | static enum ofperr |
914624f8 BP |
2575 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2576 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
04f48a68 | 2577 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2578 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
73178f20 | 2579 | { |
0a2869d5 | 2580 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2581 | enum ofperr error; |
2582 | ||
914624f8 BP |
2583 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2584 | move->src.ofs = ntohs(src_offset); | |
2585 | move->src.n_bits = ntohs(n_bits); | |
2586 | move->dst.ofs = ntohs(dst_offset); | |
2587 | move->dst.n_bits = ntohs(n_bits); | |
2588 | ||
0a2869d5 | 2589 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2590 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 | 2591 | |
5c7c16d8 YHW |
2592 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2593 | tlv_bitmap); | |
f13cdd73 BP |
2594 | if (error) { |
2595 | return error; | |
2596 | } | |
5c7c16d8 YHW |
2597 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, |
2598 | tlv_bitmap); | |
f13cdd73 BP |
2599 | if (error) { |
2600 | return error; | |
2601 | } | |
f13cdd73 | 2602 | |
6fd6ed71 | 2603 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2604 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2605 | } | |
2606 | ||
73178f20 BP |
2607 | return nxm_reg_move_check(move, NULL); |
2608 | } | |
2609 | ||
914624f8 BP |
2610 | static enum ofperr |
2611 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2612 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2613 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2614 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2615 | { |
2616 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2617 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2618 | OBJECT_OFFSETOF(oacf, pad2), vl_mff_map, |
5c7c16d8 | 2619 | tlv_bitmap, ofpacts); |
914624f8 BP |
2620 | } |
2621 | ||
2622 | static enum ofperr | |
2623 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
f3cd3ac7 | 2624 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2625 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2626 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2627 | { |
2628 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2629 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2630 | OBJECT_OFFSETOF(oacf, pad3), vl_mff_map, |
5c7c16d8 | 2631 | tlv_bitmap, ofpacts); |
914624f8 BP |
2632 | } |
2633 | ||
c2d936a4 BP |
2634 | static enum ofperr |
2635 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2636 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2637 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2638 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
c2d936a4 | 2639 | { |
0a2869d5 | 2640 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2641 | enum ofperr error; |
2642 | ||
914624f8 | 2643 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2644 | move->src.ofs = ntohs(narm->src_ofs); |
2645 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2646 | move->dst.ofs = ntohs(narm->dst_ofs); |
2647 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2648 | |
0a2869d5 | 2649 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2650 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 | 2651 | |
5c7c16d8 YHW |
2652 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2653 | tlv_bitmap); | |
bad8a439 BP |
2654 | if (error) { |
2655 | return error; | |
2656 | } | |
5c7c16d8 YHW |
2657 | |
2658 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, | |
2659 | tlv_bitmap); | |
bad8a439 BP |
2660 | if (error) { |
2661 | return error; | |
2662 | } | |
04f48a68 | 2663 | |
6fd6ed71 | 2664 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2665 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2666 | } | |
2667 | ||
c2d936a4 BP |
2668 | return nxm_reg_move_check(move, NULL); |
2669 | } | |
d01c980f | 2670 | |
c2d936a4 BP |
2671 | static void |
2672 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2673 | enum ofp_version ofp_version, struct ofpbuf *out) |
2674 | { | |
914624f8 BP |
2675 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2676 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2677 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2678 | * probe for support. Until we have that ability, we currently prefer | |
2679 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2680 | * versions. */ | |
6fd6ed71 | 2681 | size_t start_ofs = out->size; |
73178f20 | 2682 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2683 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2684 | copy->n_bits = htons(move->dst.n_bits); |
2685 | copy->src_offset = htons(move->src.ofs); | |
2686 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2687 | out->size = out->size - sizeof copy->pad2; |
04f48a68 YHW |
2688 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2689 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
914624f8 BP |
2690 | } else if (ofp_version == OFP13_VERSION |
2691 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2692 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
2693 | copy->n_bits = htons(move->dst.n_bits); | |
2694 | copy->src_offset = htons(move->src.ofs); | |
2695 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2696 | out->size = out->size - sizeof copy->pad3; |
04f48a68 YHW |
2697 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2698 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
73178f20 | 2699 | } else { |
bad8a439 | 2700 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2701 | narm->n_bits = htons(move->dst.n_bits); |
2702 | narm->src_ofs = htons(move->src.ofs); | |
2703 | narm->dst_ofs = htons(move->dst.ofs); | |
04f48a68 YHW |
2704 | nx_put_mff_header(out, move->src.field, 0, false); |
2705 | nx_put_mff_header(out, move->dst.field, 0, false); | |
73178f20 | 2706 | } |
bad8a439 | 2707 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2708 | } |
e9536ecb | 2709 | |
cab50449 | 2710 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2711 | parse_REG_MOVE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2712 | { |
efefbcae | 2713 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(pp->ofpacts); |
21b2fa61 | 2714 | return nxm_parse_reg_move(move, arg); |
c2d936a4 | 2715 | } |
0f3f3c3d | 2716 | |
c2d936a4 | 2717 | static void |
50f96b10 | 2718 | format_REG_MOVE(const struct ofpact_reg_move *a, |
efefbcae | 2719 | const struct ofpact_format_params *fp) |
c2d936a4 | 2720 | { |
efefbcae | 2721 | nxm_format_reg_move(a, fp->s); |
c2d936a4 | 2722 | } |
ae6f7530 BP |
2723 | |
2724 | static enum ofperr | |
2725 | check_REG_MOVE(const struct ofpact_reg_move *a, | |
2726 | const struct ofpact_check_params *cp) | |
2727 | { | |
2728 | return nxm_reg_move_check(a, cp->match); | |
2729 | } | |
c2d936a4 | 2730 | \f |
7eb4b1f1 BP |
2731 | /* Action structure for OFPAT12_SET_FIELD. */ |
2732 | struct ofp12_action_set_field { | |
2733 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2734 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2735 | ||
2736 | /* Followed by: | |
2737 | * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask. | |
2738 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2739 | * | |
2740 | * The "pad" member is the beginning of the above. */ | |
2741 | uint8_t pad[4]; | |
2742 | }; | |
2743 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2744 | ||
c2d936a4 BP |
2745 | /* Action structure for NXAST_REG_LOAD. |
2746 | * | |
2747 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2748 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2749 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2750 | * bit, and so on. | |
2751 | * | |
2752 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2753 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2754 | * loading them. | |
2755 | * | |
2756 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2757 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2758 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2759 | * also stored as one less than its true value: | |
2760 | * | |
2761 | * 15 6 5 0 | |
2762 | * +------------------------------+------------------+ | |
2763 | * | ofs | n_bits - 1 | | |
2764 | * +------------------------------+------------------+ | |
2765 | * | |
2766 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2767 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2768 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2769 | * OFPBAC_BAD_ARGUMENT. | |
2770 | */ | |
2771 | struct nx_action_reg_load { | |
2772 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2773 | ovs_be16 len; /* Length is 24. */ | |
2774 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2775 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2776 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2777 | ovs_be32 dst; /* Destination register. */ | |
2778 | ovs_be64 value; /* Immediate value. */ | |
2779 | }; | |
2780 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2781 | |
aad28f47 BP |
2782 | /* The NXAST_REG_LOAD2 action structure is "struct ext_action_header", |
2783 | * followed by: | |
bad8a439 | 2784 | * |
aad28f47 BP |
2785 | * - An NXM/OXM header, value, and optionally a mask. |
2786 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2787 | * | |
2788 | * The "pad" member is the beginning of the above. */ | |
bad8a439 | 2789 | |
c2d936a4 | 2790 | static enum ofperr |
7eb4b1f1 | 2791 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
04f48a68 | 2792 | bool may_mask, const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2793 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7fdb60a7 | 2794 | { |
0a2869d5 | 2795 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2796 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 | 2797 | |
128684a6 JR |
2798 | union mf_value value, mask; |
2799 | const struct mf_field *field; | |
5c7c16d8 YHW |
2800 | enum ofperr error; |
2801 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, | |
2802 | may_mask ? &mask : NULL, tlv_bitmap); | |
178742f9 | 2803 | if (error) { |
178742f9 BP |
2804 | return (error == OFPERR_OFPBMC_BAD_MASK |
2805 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2806 | : error); | |
c2d936a4 | 2807 | } |
5c7c16d8 | 2808 | |
7eb4b1f1 | 2809 | if (!may_mask) { |
128684a6 | 2810 | memset(&mask, 0xff, field->n_bytes); |
7eb4b1f1 | 2811 | } |
178742f9 | 2812 | |
6fd6ed71 | 2813 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2814 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2815 | } | |
7fdb60a7 | 2816 | |
178742f9 BP |
2817 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2818 | * Set-Field. */ | |
128684a6 | 2819 | if (field->id == MFF_IN_PORT_OXM) { |
178742f9 | 2820 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
c2d936a4 | 2821 | } |
178742f9 | 2822 | |
c2d936a4 | 2823 | /* oxm_length is now validated to be compatible with mf_value. */ |
128684a6 | 2824 | if (!field->writable) { |
178742f9 | 2825 | VLOG_WARN_RL(&rl, "destination field %s is not writable", |
128684a6 | 2826 | field->name); |
c2d936a4 BP |
2827 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2828 | } | |
c2d936a4 | 2829 | |
d3cb080e | 2830 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2831 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2832 | * a 1-bit in oxm_value and in oxm_mask." */ | |
128684a6 JR |
2833 | if (!mf_is_value_valid(field, &value) |
2834 | || (field->id == MFF_VLAN_VID | |
2835 | && (!(mask.be16 & htons(OFPVID12_PRESENT)) | |
2836 | || !(value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2837 | struct ds ds = DS_EMPTY_INITIALIZER; |
50f96b10 | 2838 | mf_format(field, &value, NULL, NULL, &ds); |
c2d936a4 | 2839 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
128684a6 | 2840 | field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2841 | ds_destroy(&ds); |
2842 | ||
2843 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2844 | } |
128684a6 JR |
2845 | |
2846 | ofpact_put_set_field(ofpacts, field, &value, &mask); | |
c2d936a4 | 2847 | return 0; |
7fdb60a7 SH |
2848 | } |
2849 | ||
7eb4b1f1 BP |
2850 | static enum ofperr |
2851 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2852 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2853 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2854 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2855 | { |
5c7c16d8 YHW |
2856 | return decode_ofpat_set_field(oasf, false, vl_mff_map, tlv_bitmap, |
2857 | ofpacts); | |
7eb4b1f1 BP |
2858 | } |
2859 | ||
2860 | static enum ofperr | |
2861 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2862 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2863 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2864 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2865 | { |
5c7c16d8 | 2866 | return decode_ofpat_set_field(oasf, true, vl_mff_map, tlv_bitmap, ofpacts); |
7eb4b1f1 BP |
2867 | } |
2868 | ||
2869 | static enum ofperr | |
2870 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2871 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2872 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2873 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7eb4b1f1 | 2874 | { |
7eb4b1f1 BP |
2875 | struct mf_subfield dst; |
2876 | enum ofperr error; | |
2877 | ||
7eb4b1f1 BP |
2878 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); |
2879 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
5c7c16d8 YHW |
2880 | error = mf_vl_mff_mf_from_nxm_header(ntohl(narl->dst), vl_mff_map, |
2881 | &dst.field, tlv_bitmap); | |
2882 | if (error) { | |
2883 | return error; | |
04f48a68 YHW |
2884 | } |
2885 | ||
7eb4b1f1 BP |
2886 | error = mf_check_dst(&dst, NULL); |
2887 | if (error) { | |
2888 | return error; | |
2889 | } | |
2890 | ||
2891 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2892 | * narl->value. */ | |
2893 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2894 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2895 | } | |
2896 | ||
128684a6 JR |
2897 | struct ofpact_set_field *sf = ofpact_put_reg_load(out, dst.field, NULL, |
2898 | NULL); | |
7eb4b1f1 | 2899 | bitwise_put(ntohll(narl->value), |
128684a6 | 2900 | sf->value, dst.field->n_bytes, dst.ofs, |
7eb4b1f1 BP |
2901 | dst.n_bits); |
2902 | bitwise_put(UINT64_MAX, | |
128684a6 | 2903 | ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, |
7eb4b1f1 | 2904 | dst.n_bits); |
7eb4b1f1 BP |
2905 | return 0; |
2906 | } | |
2907 | ||
bad8a439 | 2908 | static enum ofperr |
aad28f47 | 2909 | decode_NXAST_RAW_REG_LOAD2(const struct ext_action_header *eah, |
f3cd3ac7 | 2910 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2911 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2912 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 | 2913 | { |
aad28f47 BP |
2914 | struct ofpbuf b = ofpbuf_const_initializer(eah, ntohs(eah->len)); |
2915 | ofpbuf_pull(&b, OBJECT_OFFSETOF(eah, pad)); | |
0a2869d5 | 2916 | |
128684a6 JR |
2917 | union mf_value value, mask; |
2918 | const struct mf_field *field; | |
5c7c16d8 YHW |
2919 | enum ofperr error; |
2920 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, &mask, | |
2921 | tlv_bitmap); | |
bad8a439 BP |
2922 | if (error) { |
2923 | return error; | |
2924 | } | |
5c7c16d8 | 2925 | |
6fd6ed71 | 2926 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2927 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2928 | } | |
2929 | ||
128684a6 JR |
2930 | if (!field->writable) { |
2931 | VLOG_WARN_RL(&rl, "destination field %s is not writable", field->name); | |
bad8a439 BP |
2932 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2933 | } | |
128684a6 JR |
2934 | |
2935 | /* Put value and mask. */ | |
2936 | ofpact_put_reg_load2(out, field, &value, &mask); | |
bad8a439 BP |
2937 | return 0; |
2938 | } | |
2939 | ||
7fdb60a7 | 2940 | static void |
128684a6 JR |
2941 | put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
2942 | enum mf_field_id field, uint64_t value_) | |
7fdb60a7 | 2943 | { |
7eb4b1f1 | 2944 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2945 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2946 | size_t start_ofs = openflow->size; |
178742f9 | 2947 | union mf_value value; |
7fdb60a7 | 2948 | |
178742f9 | 2949 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2950 | |
7eb4b1f1 | 2951 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2952 | openflow->size = openflow->size - sizeof oasf->pad; |
04f48a68 | 2953 | nx_put_entry(openflow, mf_from_id(field), ofp_version, &value, NULL); |
178742f9 | 2954 | pad_ofpat(openflow, start_ofs); |
7fdb60a7 SH |
2955 | } |
2956 | ||
4b684612 BP |
2957 | static void |
2958 | put_reg_load(struct ofpbuf *openflow, | |
2959 | const struct mf_subfield *dst, uint64_t value) | |
2960 | { | |
2961 | ovs_assert(dst->n_bits <= 64); | |
2962 | ||
2963 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2964 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst->ofs, dst->n_bits); | |
04f48a68 | 2965 | narl->dst = htonl(nxm_header_from_mff(dst->field)); |
4b684612 BP |
2966 | narl->value = htonll(value); |
2967 | } | |
2968 | ||
7eb4b1f1 BP |
2969 | static bool |
2970 | next_load_segment(const struct ofpact_set_field *sf, | |
2971 | struct mf_subfield *dst, uint64_t *value) | |
2972 | { | |
fa078489 BP |
2973 | int n_bits = sf->field->n_bits; |
2974 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2975 | int start = dst->ofs + dst->n_bits; |
2976 | ||
fa078489 | 2977 | if (start < n_bits) { |
7eb4b1f1 | 2978 | dst->field = sf->field; |
128684a6 JR |
2979 | dst->ofs = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 1, start, |
2980 | n_bits); | |
fa078489 | 2981 | if (dst->ofs < n_bits) { |
128684a6 JR |
2982 | dst->n_bits = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 0, |
2983 | dst->ofs + 1, | |
fa078489 | 2984 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; |
128684a6 | 2985 | *value = bitwise_get(sf->value, n_bytes, dst->ofs, dst->n_bits); |
7eb4b1f1 BP |
2986 | return true; |
2987 | } | |
2988 | } | |
2989 | return false; | |
2990 | } | |
178742f9 | 2991 | |
7eb4b1f1 | 2992 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2993 | static void |
c2d936a4 | 2994 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2995 | { |
bad8a439 | 2996 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2997 | * experimenter OXM or is variable length (or if it came in as |
2998 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2999 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 3000 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 3001 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
aad28f47 | 3002 | struct ext_action_header *eah OVS_UNUSED; |
6fd6ed71 | 3003 | size_t start_ofs = openflow->size; |
bad8a439 | 3004 | |
aad28f47 BP |
3005 | eah = put_NXAST_REG_LOAD2(openflow); |
3006 | openflow->size = openflow->size - sizeof eah->pad; | |
04f48a68 | 3007 | nx_put_entry(openflow, sf->field, 0, sf->value, |
128684a6 | 3008 | ofpact_set_field_mask(sf)); |
bad8a439 BP |
3009 | pad_ofpat(openflow, start_ofs); |
3010 | } else { | |
3011 | struct mf_subfield dst; | |
3012 | uint64_t value; | |
7eb4b1f1 | 3013 | |
bad8a439 BP |
3014 | dst.ofs = dst.n_bits = 0; |
3015 | while (next_load_segment(sf, &dst, &value)) { | |
4b684612 | 3016 | put_reg_load(openflow, &dst, value); |
bad8a439 | 3017 | } |
7fdb60a7 SH |
3018 | } |
3019 | } | |
3020 | ||
7eb4b1f1 BP |
3021 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
3022 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 3023 | * |
c2d936a4 BP |
3024 | * We check only meta-flow types that can appear within set field actions and |
3025 | * that have a mapping to compatible action types. These struct mf_field | |
3026 | * definitions have a defined OXM or NXM header value and specify the field as | |
3027 | * writable. */ | |
3028 | static void | |
3029 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
3030 | enum ofp_version ofp_version, | |
3031 | struct ofpbuf *out) | |
7fdb60a7 | 3032 | { |
c2d936a4 BP |
3033 | switch ((int) sf->field->id) { |
3034 | case MFF_VLAN_TCI: { | |
128684a6 | 3035 | ovs_be16 tci = sf->value->be16; |
c2d936a4 BP |
3036 | bool cfi = (tci & htons(VLAN_CFI)) != 0; |
3037 | uint16_t vid = vlan_tci_to_vid(tci); | |
3038 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
3039 | ||
3040 | if (ofp_version < OFP11_VERSION) { | |
3041 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
3042 | * | |
3043 | * If CFI=1, Add or modify VLAN VID & PCP. | |
3044 | * If CFI=0, strip VLAN header, if any. | |
3045 | */ | |
3046 | if (cfi) { | |
3047 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
3048 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
3049 | } else { | |
3050 | put_OFPAT10_STRIP_VLAN(out); | |
3051 | } | |
3052 | } else { | |
3053 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
3054 | * | |
3055 | * If CFI=1, Add or modify VLAN VID & PCP. | |
3056 | * OpenFlow 1.1 set actions only apply if the packet | |
3057 | * already has VLAN tags. To be sure that is the case | |
3058 | * we have to push a VLAN header. As we do not support | |
3059 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
3060 | * header already exists. This may backfire, however, | |
3061 | * when we start supporting multiple layers of VLANs. | |
3062 | * If CFI=0, strip VLAN header, if any. | |
3063 | */ | |
3064 | if (cfi) { | |
3065 | /* Push a VLAN tag, if one was not seen at action validation | |
3066 | * time. */ | |
3067 | if (!sf->flow_has_vlan) { | |
3068 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
3069 | } | |
3070 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
3071 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
3072 | } else { | |
3073 | /* If the flow did not match on vlan, we have no way of | |
3074 | * knowing if the vlan tag exists, so we must POP just to be | |
3075 | * sure. */ | |
3076 | put_OFPAT11_POP_VLAN(out); | |
3077 | } | |
3078 | } | |
3079 | break; | |
3080 | } | |
7fdb60a7 | 3081 | |
c2d936a4 | 3082 | case MFF_VLAN_VID: { |
128684a6 | 3083 | uint16_t vid = ntohs(sf->value->be16) & VLAN_VID_MASK; |
c2d936a4 BP |
3084 | if (ofp_version == OFP10_VERSION) { |
3085 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
3086 | } else { | |
3087 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
3088 | } | |
3089 | break; | |
3090 | } | |
3091 | ||
3092 | case MFF_VLAN_PCP: | |
3093 | if (ofp_version == OFP10_VERSION) { | |
128684a6 | 3094 | put_OFPAT10_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 | 3095 | } else { |
128684a6 | 3096 | put_OFPAT11_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 BP |
3097 | } |
3098 | break; | |
3099 | ||
3100 | case MFF_ETH_SRC: | |
128684a6 | 3101 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
3102 | break; |
3103 | ||
3104 | case MFF_ETH_DST: | |
128684a6 | 3105 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
3106 | break; |
3107 | ||
3108 | case MFF_IPV4_SRC: | |
128684a6 | 3109 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
3110 | break; |
3111 | ||
3112 | case MFF_IPV4_DST: | |
128684a6 | 3113 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
3114 | break; |
3115 | ||
3116 | case MFF_IP_DSCP: | |
128684a6 | 3117 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8); |
c2d936a4 BP |
3118 | break; |
3119 | ||
3120 | case MFF_IP_DSCP_SHIFTED: | |
128684a6 | 3121 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8 << 2); |
c2d936a4 BP |
3122 | break; |
3123 | ||
1a1e1a49 EG |
3124 | case MFF_IP_ECN: { |
3125 | struct ofpact_ecn ip_ecn = { .ecn = sf->value->u8 }; | |
3126 | encode_SET_IP_ECN(&ip_ecn, ofp_version, out); | |
4b684612 | 3127 | break; |
1a1e1a49 | 3128 | } |
4b684612 | 3129 | |
c2d936a4 BP |
3130 | case MFF_TCP_SRC: |
3131 | case MFF_UDP_SRC: | |
128684a6 | 3132 | put_OFPAT_SET_TP_SRC(out, sf->value->be16); |
c2d936a4 BP |
3133 | break; |
3134 | ||
3135 | case MFF_TCP_DST: | |
3136 | case MFF_UDP_DST: | |
128684a6 | 3137 | put_OFPAT_SET_TP_DST(out, sf->value->be16); |
c2d936a4 BP |
3138 | break; |
3139 | ||
3140 | default: | |
3141 | set_field_to_nxast(sf, out); | |
3142 | break; | |
7fdb60a7 SH |
3143 | } |
3144 | } | |
3145 | ||
7eb4b1f1 BP |
3146 | static void |
3147 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
3148 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3149 | { | |
3150 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 3151 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
3152 | |
3153 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 3154 | out->size = out->size - sizeof oasf->pad; |
04f48a68 | 3155 | nx_put_entry(out, sf->field, ofp_version, sf->value, |
128684a6 | 3156 | ofpact_set_field_mask(sf)); |
7eb4b1f1 BP |
3157 | pad_ofpat(out, start_ofs); |
3158 | } | |
3159 | ||
c2d936a4 BP |
3160 | static void |
3161 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
3162 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3163 | { | |
7eb4b1f1 | 3164 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
3165 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
3166 | * entirely). */ | |
7eb4b1f1 | 3167 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
3168 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
3169 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
3170 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
3171 | set_field_to_nxast(sf, out); |
3172 | } else if (ofp_version < OFP12_VERSION) { | |
3173 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 3174 | set_field_to_legacy_openflow(sf, ofp_version, out); |
128684a6 | 3175 | } else if (is_all_ones(ofpact_set_field_mask(sf), sf->field->n_bytes)) { |
7eb4b1f1 BP |
3176 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an |
3177 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
3178 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 3179 | } else { |
7eb4b1f1 BP |
3180 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
3181 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
3182 | * so encode it as reg_load. */ | |
3183 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
3184 | } |
3185 | } | |
3186 | ||
36b43aa6 JS |
3187 | /* Parses the input argument 'arg' into the key, value, and delimiter |
3188 | * components that are common across the reg_load and set_field action format. | |
3189 | * | |
3190 | * With an argument like "1->metadata", sets the following pointers to | |
3191 | * point within 'arg': | |
3192 | * key: "metadata" | |
3193 | * value: "1" | |
3194 | * delim: "->" | |
3195 | * | |
3196 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3197 | * error. The caller is responsible for freeing the returned string. */ | |
3198 | static char * OVS_WARN_UNUSED_RESULT | |
3199 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
3200 | { | |
3201 | char *value_end; | |
3202 | ||
3203 | *value = arg; | |
3204 | value_end = strstr(arg, "->"); | |
3205 | *key = value_end + strlen("->"); | |
3206 | if (delim) { | |
3207 | *delim = value_end; | |
3208 | } | |
3209 | ||
3210 | if (!value_end) { | |
3211 | return xasprintf("%s: missing `->'", arg); | |
3212 | } | |
3213 | if (strlen(value_end) <= strlen("->")) { | |
3214 | return xasprintf("%s: missing field name following `->'", arg); | |
3215 | } | |
3216 | ||
3217 | return NULL; | |
3218 | } | |
3219 | ||
c2d936a4 | 3220 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
efefbcae | 3221 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3222 | * |
3223 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3224 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3225 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3226 | set_field_parse__(char *arg, const struct ofpact_parse_params *pp) |
7fdb60a7 | 3227 | { |
c2d936a4 BP |
3228 | char *value; |
3229 | char *delim; | |
3230 | char *key; | |
3231 | const struct mf_field *mf; | |
128684a6 | 3232 | union mf_value sf_value, sf_mask; |
c2d936a4 | 3233 | char *error; |
7fdb60a7 | 3234 | |
36b43aa6 JS |
3235 | error = set_field_split_str(arg, &key, &value, &delim); |
3236 | if (error) { | |
3237 | return error; | |
c2d936a4 | 3238 | } |
e3f8f887 | 3239 | |
c2d936a4 BP |
3240 | mf = mf_from_name(key); |
3241 | if (!mf) { | |
3242 | return xasprintf("%s is not a valid OXM field name", key); | |
3243 | } | |
3244 | if (!mf->writable) { | |
3245 | return xasprintf("%s is read-only", key); | |
3246 | } | |
128684a6 | 3247 | |
c2d936a4 | 3248 | delim[0] = '\0'; |
efefbcae | 3249 | error = mf_parse(mf, value, pp->port_map, &sf_value, &sf_mask); |
7fdb60a7 SH |
3250 | if (error) { |
3251 | return error; | |
3252 | } | |
3253 | ||
128684a6 | 3254 | if (!mf_is_value_valid(mf, &sf_value)) { |
c2d936a4 | 3255 | return xasprintf("%s is not a valid value for field %s", value, key); |
7fdb60a7 SH |
3256 | } |
3257 | ||
efefbcae | 3258 | *pp->usable_protocols &= mf->usable_protocols_exact; |
128684a6 | 3259 | |
efefbcae | 3260 | ofpact_put_set_field(pp->ofpacts, mf, &sf_value, &sf_mask); |
c2d936a4 | 3261 | return NULL; |
7fdb60a7 SH |
3262 | } |
3263 | ||
c2d936a4 | 3264 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
efefbcae | 3265 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3266 | * |
3267 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3268 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3269 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3270 | parse_SET_FIELD(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3271 | { |
3272 | char *copy = xstrdup(arg); | |
efefbcae | 3273 | char *error = set_field_parse__(copy, pp); |
c2d936a4 BP |
3274 | free(copy); |
3275 | return error; | |
3276 | } | |
a359d5ad | 3277 | |
cab50449 | 3278 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3279 | parse_reg_load(char *arg, const struct ofpact_parse_params *pp) |
7eb4b1f1 | 3280 | { |
7eb4b1f1 | 3281 | struct mf_subfield dst; |
36b43aa6 | 3282 | char *key, *value_str; |
81270993 | 3283 | union mf_value value; |
7eb4b1f1 BP |
3284 | char *error; |
3285 | ||
36b43aa6 JS |
3286 | error = set_field_split_str(arg, &key, &value_str, NULL); |
3287 | if (error) { | |
3288 | return error; | |
7eb4b1f1 | 3289 | } |
36b43aa6 JS |
3290 | |
3291 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
3292 | if (error) { |
3293 | return error; | |
3294 | } | |
3295 | ||
81270993 JS |
3296 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
3297 | &key)) { | |
3298 | return xasprintf("%s: cannot parse integer value", arg); | |
3299 | } | |
3300 | ||
3301 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
3302 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
3303 | struct ds ds; | |
3304 | ||
3305 | ds_init(&ds); | |
50f96b10 | 3306 | mf_format(dst.field, &value, NULL, NULL, &ds); |
81270993 JS |
3307 | error = xasprintf("%s: value %s does not fit into %d bits", |
3308 | arg, ds_cstr(&ds), dst.n_bits); | |
3309 | ds_destroy(&ds); | |
3310 | return error; | |
7eb4b1f1 BP |
3311 | } |
3312 | ||
efefbcae BP |
3313 | struct ofpact_set_field *sf = ofpact_put_reg_load(pp->ofpacts, dst.field, |
3314 | NULL, NULL); | |
81270993 | 3315 | |
128684a6 JR |
3316 | bitwise_copy(&value, dst.field->n_bytes, 0, sf->value, |
3317 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
3318 | bitwise_one(ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, | |
3319 | dst.n_bits); | |
7eb4b1f1 BP |
3320 | return NULL; |
3321 | } | |
3322 | ||
c2d936a4 | 3323 | static void |
50f96b10 | 3324 | format_SET_FIELD(const struct ofpact_set_field *a, |
efefbcae | 3325 | const struct ofpact_format_params *fp) |
c2d936a4 | 3326 | { |
7eb4b1f1 BP |
3327 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
3328 | struct mf_subfield dst; | |
3329 | uint64_t value; | |
3330 | ||
3331 | dst.ofs = dst.n_bits = 0; | |
3332 | while (next_load_segment(a, &dst, &value)) { | |
efefbcae | 3333 | ds_put_format(fp->s, "%sload:%s%#"PRIx64"%s->%s", |
b1c5bf1f QM |
3334 | colors.special, colors.end, value, |
3335 | colors.special, colors.end); | |
efefbcae BP |
3336 | mf_format_subfield(&dst, fp->s); |
3337 | ds_put_char(fp->s, ','); | |
7eb4b1f1 | 3338 | } |
efefbcae | 3339 | ds_chomp(fp->s, ','); |
7eb4b1f1 | 3340 | } else { |
efefbcae BP |
3341 | ds_put_format(fp->s, "%sset_field:%s", colors.special, colors.end); |
3342 | mf_format(a->field, a->value, ofpact_set_field_mask(a), | |
3343 | fp->port_map, fp->s); | |
3344 | ds_put_format(fp->s, "%s->%s%s", | |
b1c5bf1f | 3345 | colors.special, colors.end, a->field->name); |
7eb4b1f1 BP |
3346 | } |
3347 | } | |
3348 | ||
ae6f7530 BP |
3349 | static enum ofperr |
3350 | check_SET_FIELD(struct ofpact_set_field *a, | |
3351 | const struct ofpact_check_params *cp) | |
3352 | { | |
3353 | const struct mf_field *mf = a->field; | |
3354 | struct flow *flow = &cp->match->flow; | |
3355 | ovs_be16 *tci = &flow->vlans[0].tci; | |
3356 | ||
3357 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
3358 | if (!mf_are_prereqs_ok(mf, flow, NULL) | |
3359 | || (mf->id == MFF_VLAN_VID && !(*tci & htons(VLAN_CFI)))) { | |
3360 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisites", | |
3361 | mf->name); | |
3362 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
3363 | } | |
3364 | ||
3365 | /* Remember if we saw a VLAN tag in the flow, to aid translating to | |
3366 | * OpenFlow 1.1 if need be. */ | |
3367 | a->flow_has_vlan = (*tci & htons(VLAN_CFI)) != 0; | |
3368 | if (mf->id == MFF_VLAN_TCI) { | |
3369 | /* The set field may add or remove the VLAN tag, | |
3370 | * Mark the status temporarily. */ | |
3371 | *tci = a->value->be16; | |
3372 | } | |
3373 | ||
3374 | return 0; | |
3375 | } | |
3376 | ||
128684a6 JR |
3377 | /* Appends an OFPACT_SET_FIELD ofpact with enough space for the value and mask |
3378 | * for the 'field' to 'ofpacts' and returns it. Fills in the value from | |
3379 | * 'value', if non-NULL, and mask from 'mask' if non-NULL. If 'value' is | |
3380 | * non-NULL and 'mask' is NULL, an all-ones mask will be filled in. */ | |
3381 | struct ofpact_set_field * | |
3382 | ofpact_put_set_field(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3383 | const void *value, const void *mask) | |
3384 | { | |
3385 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
3386 | sf->field = field; | |
3387 | ||
3388 | /* Fill in the value and mask if given, otherwise put zeroes so that the | |
3389 | * caller may fill in the value and mask itself. */ | |
3390 | if (value) { | |
3391 | ofpbuf_put_uninit(ofpacts, 2 * field->n_bytes); | |
3392 | sf = ofpacts->header; | |
3393 | memcpy(sf->value, value, field->n_bytes); | |
3394 | if (mask) { | |
3395 | memcpy(ofpact_set_field_mask(sf), mask, field->n_bytes); | |
3396 | } else { | |
3397 | memset(ofpact_set_field_mask(sf), 0xff, field->n_bytes); | |
3398 | } | |
3399 | } else { | |
3400 | ofpbuf_put_zeros(ofpacts, 2 * field->n_bytes); | |
3401 | sf = ofpacts->header; | |
3402 | } | |
3403 | /* Update length. */ | |
3404 | ofpact_finish_SET_FIELD(ofpacts, &sf); | |
3405 | ||
3406 | return sf; | |
3407 | } | |
3408 | ||
7eb4b1f1 BP |
3409 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact |
3410 | * is marked such that, if possible, it will be translated to OpenFlow as | |
3411 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
3412 | * that was the way that the action was expressed when it came into OVS or for | |
3413 | * backward compatibility. */ | |
3414 | struct ofpact_set_field * | |
128684a6 JR |
3415 | ofpact_put_reg_load(struct ofpbuf *ofpacts, const struct mf_field *field, |
3416 | const void *value, const void *mask) | |
7eb4b1f1 | 3417 | { |
128684a6 JR |
3418 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, |
3419 | mask); | |
7eb4b1f1 | 3420 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; |
128684a6 | 3421 | |
7eb4b1f1 | 3422 | return sf; |
c2d936a4 | 3423 | } |
128684a6 JR |
3424 | |
3425 | struct ofpact_set_field * | |
3426 | ofpact_put_reg_load2(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3427 | const void *value, const void *mask) | |
3428 | { | |
3429 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, | |
3430 | mask); | |
3431 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; | |
3432 | ||
3433 | return sf; | |
3434 | } | |
3435 | ||
c2d936a4 BP |
3436 | \f |
3437 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
3438 | * | |
3439 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
3440 | * top of the stack. | |
3441 | */ | |
3442 | struct nx_action_stack { | |
3443 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3444 | ovs_be16 len; /* Length is 16. */ | |
3445 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3446 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
3447 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
3448 | /* Followed by: |
3449 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
3450 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
3451 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
3452 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 3453 | }; |
c2d936a4 | 3454 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 3455 | |
bad8a439 | 3456 | static enum ofperr |
c2d936a4 | 3457 | decode_stack_action(const struct nx_action_stack *nasp, |
5c7c16d8 | 3458 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
c2d936a4 | 3459 | struct ofpact_stack *stack_action) |
a359d5ad | 3460 | { |
5c7c16d8 | 3461 | enum ofperr error; |
c2d936a4 | 3462 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 3463 | |
0a2869d5 | 3464 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 3465 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
5c7c16d8 YHW |
3466 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, |
3467 | &stack_action->subfield.field, NULL, | |
3468 | tlv_bitmap); | |
bad8a439 BP |
3469 | if (error) { |
3470 | return error; | |
3471 | } | |
5c7c16d8 | 3472 | |
6fd6ed71 | 3473 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 3474 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 3475 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
3476 | return OFPERR_NXBRC_MUST_BE_ZERO; |
3477 | } | |
3478 | ||
3479 | return 0; | |
a359d5ad IY |
3480 | } |
3481 | ||
c2d936a4 BP |
3482 | static enum ofperr |
3483 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3484 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3485 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3486 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
a359d5ad | 3487 | { |
c2d936a4 | 3488 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
5c7c16d8 YHW |
3489 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3490 | push); | |
bad8a439 | 3491 | return error ? error : nxm_stack_push_check(push, NULL); |
a359d5ad IY |
3492 | } |
3493 | ||
c2d936a4 BP |
3494 | static enum ofperr |
3495 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3496 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3497 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3498 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
084c53de | 3499 | { |
c2d936a4 | 3500 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
5c7c16d8 YHW |
3501 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3502 | pop); | |
bad8a439 | 3503 | return error ? error : nxm_stack_pop_check(pop, NULL); |
084c53de BP |
3504 | } |
3505 | ||
c2d936a4 BP |
3506 | static void |
3507 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3508 | struct nx_action_stack *nasp) | |
c0621c39 | 3509 | { |
bad8a439 BP |
3510 | struct ofpbuf b; |
3511 | ovs_be16 n_bits; | |
3512 | ||
c2d936a4 | 3513 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3514 | |
3515 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3516 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
04f48a68 | 3517 | nx_put_mff_header(&b, stack_action->subfield.field, 0, false); |
bad8a439 BP |
3518 | n_bits = htons(stack_action->subfield.n_bits); |
3519 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3520 | } |
3521 | ||
c2d936a4 BP |
3522 | static void |
3523 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3524 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3525 | { | |
3526 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3527 | } | |
8e97815e | 3528 | |
c2d936a4 BP |
3529 | static void |
3530 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3531 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3532 | { |
c2d936a4 BP |
3533 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3534 | } | |
8e97815e | 3535 | |
cab50449 | 3536 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3537 | parse_STACK_PUSH(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3538 | { |
efefbcae | 3539 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(pp->ofpacts), arg); |
c2d936a4 | 3540 | } |
8e97815e | 3541 | |
cab50449 | 3542 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3543 | parse_STACK_POP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3544 | { |
efefbcae | 3545 | return nxm_parse_stack_action(ofpact_put_STACK_POP(pp->ofpacts), arg); |
8e97815e BP |
3546 | } |
3547 | ||
c2d936a4 | 3548 | static void |
50f96b10 | 3549 | format_STACK_PUSH(const struct ofpact_stack *a, |
efefbcae | 3550 | const struct ofpact_format_params *fp) |
8e97815e | 3551 | { |
efefbcae | 3552 | nxm_format_stack_push(a, fp->s); |
c2d936a4 | 3553 | } |
8e97815e | 3554 | |
c2d936a4 | 3555 | static void |
50f96b10 | 3556 | format_STACK_POP(const struct ofpact_stack *a, |
efefbcae | 3557 | const struct ofpact_format_params *fp) |
c2d936a4 | 3558 | { |
efefbcae | 3559 | nxm_format_stack_pop(a, fp->s); |
c2d936a4 | 3560 | } |
ae6f7530 BP |
3561 | |
3562 | static enum ofperr | |
3563 | check_STACK_PUSH(const struct ofpact_stack *a, | |
3564 | const struct ofpact_check_params *cp) | |
3565 | { | |
3566 | return nxm_stack_push_check(a, cp->match); | |
3567 | } | |
3568 | ||
3569 | static enum ofperr | |
3570 | check_STACK_POP(const struct ofpact_stack *a, | |
3571 | const struct ofpact_check_params *cp) | |
3572 | { | |
3573 | return nxm_stack_pop_check(a, cp->match); | |
3574 | } | |
c2d936a4 BP |
3575 | \f |
3576 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3577 | * | |
3578 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3579 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3580 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3581 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3582 | * | |
3583 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3584 | * sent only to controllers with id 0.) | |
3585 | */ | |
3586 | struct nx_action_cnt_ids { | |
3587 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
91fc374a | 3588 | ovs_be16 len; /* Length including cnt_ids. */ |
c2d936a4 BP |
3589 | ovs_be32 vendor; /* NX_VENDOR_ID. */ |
3590 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3591 | ||
3592 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3593 | uint8_t zeros[4]; /* Must be zero. */ | |
3594 | ||
b5343307 | 3595 | /* Followed by 1 or more controller ids: |
c2d936a4 | 3596 | * |
b5343307 BP |
3597 | * uint16_t cnt_ids[]; -- Controller ids. |
3598 | * uint8_t pad[]; -- Must be 0 to 8-byte align cnt_ids[]. | |
c2d936a4 BP |
3599 | */ |
3600 | }; | |
3601 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3602 | ||
3603 | static enum ofperr | |
3604 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3605 | { | |
3606 | uint16_t id = 0; | |
3607 | struct ofpact_cnt_ids *ids; | |
3608 | enum ofperr error = 0; | |
3609 | ||
3610 | ids = ofpact_put_DEC_TTL(out); | |
3611 | ids->n_controllers = 1; | |
3612 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3613 | ids = out->header; |
ce058104 | 3614 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3615 | return error; |
3616 | } | |
3617 | ||
3618 | static enum ofperr | |
3619 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3620 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3621 | struct ofpbuf *out) |
3622 | { | |
3623 | struct ofpact_cnt_ids *ids; | |
3624 | size_t ids_size; | |
3625 | int i; | |
3626 | ||
3627 | ids = ofpact_put_DEC_TTL(out); | |
3628 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3629 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3630 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3631 | ||
3632 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3633 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3634 | } |
c2d936a4 BP |
3635 | |
3636 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3637 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3638 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
fd13c6b5 | 3639 | "are required for %u controllers.", |
c2d936a4 BP |
3640 | ids_size, ids->n_controllers * sizeof(ovs_be16), |
3641 | ids->n_controllers); | |
3642 | return OFPERR_OFPBAC_BAD_LEN; | |
3643 | } | |
3644 | ||
3645 | for (i = 0; i < ids->n_controllers; i++) { | |
3646 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3647 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3648 | ids = out->header; |
c2d936a4 BP |
3649 | } |
3650 | ||
ce058104 | 3651 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3652 | |
3653 | return 0; | |
8e97815e BP |
3654 | } |
3655 | ||
c2d936a4 BP |
3656 | static void |
3657 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3658 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3659 | { |
c2d936a4 BP |
3660 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3661 | || dec_ttl->n_controllers != 1 | |
3662 | || dec_ttl->cnt_ids[0] != 0) { | |
3663 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3664 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3665 | ovs_be16 *ids; | |
3666 | size_t i; | |
8e97815e | 3667 | |
c2d936a4 BP |
3668 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3669 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3670 | ||
3671 | ids = ofpbuf_put_zeros(out, ids_len); | |
3672 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3673 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3674 | } |
c2d936a4 BP |
3675 | } else { |
3676 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3677 | } |
8e97815e BP |
3678 | } |
3679 | ||
c2d936a4 | 3680 | static void |
efefbcae | 3681 | parse_noargs_dec_ttl(const struct ofpact_parse_params *pp) |
d01c980f | 3682 | { |
c2d936a4 BP |
3683 | struct ofpact_cnt_ids *ids; |
3684 | uint16_t id = 0; | |
3685 | ||
efefbcae BP |
3686 | ofpact_put_DEC_TTL(pp->ofpacts); |
3687 | ofpbuf_put(pp->ofpacts, &id, sizeof id); | |
3688 | ids = pp->ofpacts->header; | |
c2d936a4 | 3689 | ids->n_controllers++; |
efefbcae | 3690 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
d01c980f BP |
3691 | } |
3692 | ||
cab50449 | 3693 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3694 | parse_DEC_TTL(char *arg, const struct ofpact_parse_params *pp) |
d01c980f | 3695 | { |
c2d936a4 | 3696 | if (*arg == '\0') { |
efefbcae | 3697 | parse_noargs_dec_ttl(pp); |
c2d936a4 BP |
3698 | } else { |
3699 | struct ofpact_cnt_ids *ids; | |
3700 | char *cntr; | |
3701 | ||
efefbcae | 3702 | ids = ofpact_put_DEC_TTL(pp->ofpacts); |
c2d936a4 BP |
3703 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; |
3704 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3705 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3706 | uint16_t id = atoi(cntr); | |
3707 | ||
efefbcae BP |
3708 | ofpbuf_put(pp->ofpacts, &id, sizeof id); |
3709 | ids = pp->ofpacts->header; | |
c2d936a4 BP |
3710 | ids->n_controllers++; |
3711 | } | |
3712 | if (!ids->n_controllers) { | |
3713 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3714 | "id."); | |
3715 | } | |
8e738337 TA |
3716 | |
3717 | if (ofpbuf_oversized(pp->ofpacts)) { | |
3718 | return xasprintf("input too big"); | |
3719 | } | |
3720 | ||
efefbcae | 3721 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
c2d936a4 BP |
3722 | } |
3723 | return NULL; | |
d01c980f BP |
3724 | } |
3725 | ||
c2d936a4 | 3726 | static void |
50f96b10 | 3727 | format_DEC_TTL(const struct ofpact_cnt_ids *a, |
efefbcae | 3728 | const struct ofpact_format_params *fp) |
d01c980f | 3729 | { |
c2d936a4 | 3730 | size_t i; |
d01c980f | 3731 | |
efefbcae | 3732 | ds_put_format(fp->s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3733 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
efefbcae | 3734 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3735 | for (i = 0; i < a->n_controllers; i++) { |
3736 | if (i) { | |
efefbcae | 3737 | ds_put_cstr(fp->s, ","); |
d01c980f | 3738 | } |
efefbcae | 3739 | ds_put_format(fp->s, "%"PRIu16, a->cnt_ids[i]); |
c2d936a4 | 3740 | } |
efefbcae | 3741 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3742 | } |
3743 | } | |
ae6f7530 BP |
3744 | |
3745 | static enum ofperr | |
3746 | check_DEC_TTL(const struct ofpact_cnt_ids *a OVS_UNUSED, | |
3747 | struct ofpact_check_params *cp) | |
3748 | { | |
3749 | return check_set_ip(cp); | |
3750 | } | |
c2d936a4 BP |
3751 | \f |
3752 | /* Set MPLS label actions. */ | |
d01c980f BP |
3753 | |
3754 | static enum ofperr | |
f3cd3ac7 JS |
3755 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3756 | enum ofp_version ofp_version OVS_UNUSED, | |
3757 | struct ofpbuf *out) | |
d01c980f | 3758 | { |
c2d936a4 BP |
3759 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3760 | return 0; | |
3761 | } | |
d01c980f | 3762 | |
c2d936a4 BP |
3763 | static void |
3764 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3765 | enum ofp_version ofp_version, | |
3766 | struct ofpbuf *out) | |
3767 | { | |
3768 | if (ofp_version < OFP12_VERSION) { | |
3769 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3770 | } else { | |
128684a6 | 3771 | put_set_field(out, ofp_version, MFF_MPLS_LABEL, ntohl(label->label)); |
d01c980f | 3772 | } |
c2d936a4 | 3773 | } |
d01c980f | 3774 | |
cab50449 | 3775 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3776 | parse_SET_MPLS_LABEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3777 | { |
efefbcae BP |
3778 | struct ofpact_mpls_label *mpls_label |
3779 | = ofpact_put_SET_MPLS_LABEL(pp->ofpacts); | |
c2d936a4 BP |
3780 | if (*arg == '\0') { |
3781 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3782 | } |
c2d936a4 BP |
3783 | |
3784 | mpls_label->label = htonl(atoi(arg)); | |
3785 | return NULL; | |
d01c980f BP |
3786 | } |
3787 | ||
3788 | static void | |
50f96b10 | 3789 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, |
efefbcae | 3790 | const struct ofpact_format_params *fp) |
d01c980f | 3791 | { |
efefbcae | 3792 | ds_put_format(fp->s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
b1c5bf1f QM |
3793 | colors.paren, colors.end, ntohl(a->label), |
3794 | colors.paren, colors.end); | |
d01c980f | 3795 | } |
ae6f7530 BP |
3796 | |
3797 | static enum ofperr | |
3798 | check_set_mpls(struct ofpact_check_params *cp) | |
3799 | { | |
3800 | ovs_be16 dl_type = get_dl_type(&cp->match->flow); | |
3801 | if (!eth_type_mpls(dl_type)) { | |
3802 | inconsistent_match(&cp->usable_protocols); | |
3803 | } | |
3804 | return 0; | |
3805 | } | |
3806 | ||
3807 | static enum ofperr | |
3808 | check_SET_MPLS_LABEL(const struct ofpact_mpls_label *a OVS_UNUSED, | |
3809 | struct ofpact_check_params *cp) | |
3810 | { | |
3811 | return check_set_mpls(cp); | |
3812 | } | |
c2d936a4 BP |
3813 | \f |
3814 | /* Set MPLS TC actions. */ | |
d01c980f | 3815 | |
c2d936a4 | 3816 | static enum ofperr |
f3cd3ac7 JS |
3817 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3818 | enum ofp_version ofp_version OVS_UNUSED, | |
3819 | struct ofpbuf *out) | |
d01c980f | 3820 | { |
c2d936a4 BP |
3821 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3822 | return 0; | |
3823 | } | |
d01c980f | 3824 | |
c2d936a4 BP |
3825 | static void |
3826 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3827 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3828 | { | |
3829 | if (ofp_version < OFP12_VERSION) { | |
3830 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3831 | } else { | |
128684a6 | 3832 | put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); |
8f2cded4 | 3833 | } |
c2d936a4 | 3834 | } |
8f2cded4 | 3835 | |
cab50449 | 3836 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3837 | parse_SET_MPLS_TC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3838 | { |
efefbcae | 3839 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(pp->ofpacts); |
d01c980f | 3840 | |
c2d936a4 BP |
3841 | if (*arg == '\0') { |
3842 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3843 | } |
3844 | ||
c2d936a4 BP |
3845 | mpls_tc->tc = atoi(arg); |
3846 | return NULL; | |
3847 | } | |
d01c980f | 3848 | |
c2d936a4 | 3849 | static void |
50f96b10 | 3850 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, |
efefbcae | 3851 | const struct ofpact_format_params *fp) |
c2d936a4 | 3852 | { |
efefbcae | 3853 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3854 | colors.paren, colors.end, a->tc, |
3855 | colors.paren, colors.end); | |
c2d936a4 | 3856 | } |
ae6f7530 BP |
3857 | |
3858 | static enum ofperr | |
3859 | check_SET_MPLS_TC(const struct ofpact_mpls_tc *a OVS_UNUSED, | |
3860 | struct ofpact_check_params *cp) | |
3861 | { | |
3862 | return check_set_mpls(cp); | |
3863 | } | |
c2d936a4 BP |
3864 | \f |
3865 | /* Set MPLS TTL actions. */ | |
d01c980f | 3866 | |
c2d936a4 | 3867 | static enum ofperr |
f3cd3ac7 JS |
3868 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3869 | enum ofp_version ofp_version OVS_UNUSED, | |
3870 | struct ofpbuf *out) | |
c2d936a4 BP |
3871 | { |
3872 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3873 | return 0; | |
3874 | } | |
638a19b0 | 3875 | |
c2d936a4 BP |
3876 | static void |
3877 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3878 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3879 | { | |
3880 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3881 | } | |
638a19b0 | 3882 | |
c2d936a4 | 3883 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
efefbcae | 3884 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3885 | * |
3886 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3887 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3888 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3889 | parse_SET_MPLS_TTL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3890 | { |
efefbcae | 3891 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(pp->ofpacts); |
d01c980f | 3892 | |
c2d936a4 BP |
3893 | if (*arg == '\0') { |
3894 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3895 | } |
7fdb60a7 | 3896 | |
c2d936a4 BP |
3897 | mpls_ttl->ttl = atoi(arg); |
3898 | return NULL; | |
3899 | } | |
4cceacb9 | 3900 | |
c2d936a4 | 3901 | static void |
50f96b10 | 3902 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, |
efefbcae | 3903 | const struct ofpact_format_params *fp) |
c2d936a4 | 3904 | { |
efefbcae | 3905 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3906 | colors.paren, colors.end, a->ttl, |
3907 | colors.paren, colors.end); | |
c2d936a4 | 3908 | } |
ae6f7530 BP |
3909 | |
3910 | static enum ofperr | |
3911 | check_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a OVS_UNUSED, | |
3912 | struct ofpact_check_params *cp) | |
3913 | { | |
3914 | return check_set_mpls(cp); | |
3915 | } | |
c2d936a4 BP |
3916 | \f |
3917 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3918 | |
c2d936a4 BP |
3919 | static enum ofperr |
3920 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3921 | { | |
3922 | ofpact_put_DEC_MPLS_TTL(out); | |
3923 | return 0; | |
3924 | } | |
8dd54666 | 3925 | |
c2d936a4 BP |
3926 | static void |
3927 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3928 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3929 | { | |
3930 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3931 | } | |
3932 | ||
cab50449 | 3933 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3934 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 3935 | { |
efefbcae | 3936 | ofpact_put_DEC_MPLS_TTL(pp->ofpacts); |
c2d936a4 BP |
3937 | return NULL; |
3938 | } | |
3939 | ||
3940 | static void | |
50f96b10 | 3941 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 3942 | const struct ofpact_format_params *fp) |
c2d936a4 | 3943 | { |
efefbcae | 3944 | ds_put_format(fp->s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 | 3945 | } |
ae6f7530 BP |
3946 | |
3947 | static enum ofperr | |
3948 | check_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, | |
3949 | struct ofpact_check_params *cp) | |
3950 | { | |
3951 | return check_set_mpls(cp); | |
3952 | } | |
c2d936a4 BP |
3953 | \f |
3954 | /* Push MPLS label action. */ | |
3955 | ||
3956 | static enum ofperr | |
f3cd3ac7 JS |
3957 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3958 | enum ofp_version ofp_version OVS_UNUSED, | |
3959 | struct ofpbuf *out) | |
c2d936a4 BP |
3960 | { |
3961 | struct ofpact_push_mpls *oam; | |
3962 | ||
3963 | if (!eth_type_mpls(ethertype)) { | |
3964 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3965 | } |
c2d936a4 BP |
3966 | oam = ofpact_put_PUSH_MPLS(out); |
3967 | oam->ethertype = ethertype; | |
d01c980f | 3968 | |
c2d936a4 BP |
3969 | return 0; |
3970 | } | |
3971 | ||
3972 | static void | |
3973 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3974 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3975 | { | |
3976 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3977 | } | |
3978 | ||
cab50449 | 3979 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3980 | parse_PUSH_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3981 | { |
3982 | uint16_t ethertype; | |
3983 | char *error; | |
3984 | ||
3985 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3986 | if (!error) { | |
efefbcae | 3987 | ofpact_put_PUSH_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
d01c980f BP |
3988 | } |
3989 | return error; | |
3990 | } | |
c2d936a4 BP |
3991 | |
3992 | static void | |
50f96b10 | 3993 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, |
efefbcae | 3994 | const struct ofpact_format_params *fp) |
c2d936a4 | 3995 | { |
efefbcae | 3996 | ds_put_format(fp->s, "%spush_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 3997 | colors.param, colors.end, ntohs(a->ethertype)); |
c2d936a4 | 3998 | } |
ae6f7530 BP |
3999 | |
4000 | static enum ofperr | |
4001 | check_PUSH_MPLS(const struct ofpact_push_mpls *a, | |
4002 | struct ofpact_check_params *cp) | |
4003 | { | |
4004 | struct flow *flow = &cp->match->flow; | |
4005 | ||
4006 | if (flow->packet_type != htonl(PT_ETH)) { | |
4007 | inconsistent_match(&cp->usable_protocols); | |
4008 | } | |
4009 | flow->dl_type = a->ethertype; | |
4010 | ||
4011 | /* The packet is now MPLS and the MPLS payload is opaque. | |
4012 | * Thus nothing can be assumed about the network protocol. | |
4013 | * Temporarily mark that we have no nw_proto. */ | |
4014 | flow->nw_proto = 0; | |
4015 | ||
4016 | return 0; | |
4017 | } | |
d01c980f | 4018 | \f |
c2d936a4 BP |
4019 | /* Pop MPLS label action. */ |
4020 | ||
4021 | static enum ofperr | |
f3cd3ac7 JS |
4022 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
4023 | enum ofp_version ofp_version OVS_UNUSED, | |
4024 | struct ofpbuf *out) | |
57ad4e9e | 4025 | { |
c2d936a4 BP |
4026 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
4027 | return 0; | |
4028 | } | |
57ad4e9e | 4029 | |
c2d936a4 BP |
4030 | static void |
4031 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
4032 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4033 | { | |
4034 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
4035 | } | |
4036 | ||
cab50449 | 4037 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4038 | parse_POP_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
4039 | { |
4040 | uint16_t ethertype; | |
4041 | char *error; | |
4042 | ||
4043 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
4044 | if (!error) { | |
efefbcae | 4045 | ofpact_put_POP_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
57ad4e9e | 4046 | } |
c2d936a4 | 4047 | return error; |
57ad4e9e BP |
4048 | } |
4049 | ||
ba2fe8e9 | 4050 | static void |
50f96b10 | 4051 | format_POP_MPLS(const struct ofpact_pop_mpls *a, |
efefbcae | 4052 | const struct ofpact_format_params *fp) |
ba2fe8e9 | 4053 | { |
efefbcae | 4054 | ds_put_format(fp->s, "%spop_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 4055 | colors.param, colors.end, ntohs(a->ethertype)); |
ba2fe8e9 | 4056 | } |
ae6f7530 BP |
4057 | |
4058 | static enum ofperr | |
4059 | check_POP_MPLS(const struct ofpact_pop_mpls *a, struct ofpact_check_params *cp) | |
4060 | { | |
4061 | struct flow *flow = &cp->match->flow; | |
4062 | ovs_be16 dl_type = get_dl_type(flow); | |
4063 | ||
4064 | if (flow->packet_type != htonl(PT_ETH) || !eth_type_mpls(dl_type)) { | |
4065 | inconsistent_match(&cp->usable_protocols); | |
4066 | } | |
4067 | flow->dl_type = a->ethertype; | |
4068 | return 0; | |
4069 | } | |
c2d936a4 BP |
4070 | \f |
4071 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 4072 | |
f25d0cf3 | 4073 | static enum ofperr |
f3cd3ac7 JS |
4074 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
4075 | enum ofp_version ofp_version OVS_UNUSED, | |
4076 | struct ofpbuf *out) | |
f25d0cf3 | 4077 | { |
c2d936a4 BP |
4078 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
4079 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
4080 | tunnel->tun_id = tun_id; | |
4081 | return 0; | |
4082 | } | |
f25d0cf3 | 4083 | |
c2d936a4 | 4084 | static enum ofperr |
f3cd3ac7 JS |
4085 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
4086 | enum ofp_version ofp_version OVS_UNUSED, | |
4087 | struct ofpbuf *out) | |
c2d936a4 BP |
4088 | { |
4089 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
4090 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
4091 | tunnel->tun_id = tun_id; | |
4092 | return 0; | |
4093 | } | |
f25d0cf3 | 4094 | |
c2d936a4 BP |
4095 | static void |
4096 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
4097 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4098 | { | |
4099 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 4100 | |
c2d936a4 BP |
4101 | if (ofp_version < OFP12_VERSION) { |
4102 | if (tun_id <= UINT32_MAX | |
4103 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
4104 | put_NXAST_SET_TUNNEL(out, tun_id); | |
4105 | } else { | |
4106 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 4107 | } |
c2d936a4 | 4108 | } else { |
128684a6 | 4109 | put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); |
c2d936a4 BP |
4110 | } |
4111 | } | |
f25d0cf3 | 4112 | |
cab50449 | 4113 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
4114 | parse_set_tunnel(char *arg, enum ofp_raw_action_type raw, |
4115 | const struct ofpact_parse_params *pp) | |
c2d936a4 BP |
4116 | { |
4117 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 4118 | |
efefbcae | 4119 | tunnel = ofpact_put_SET_TUNNEL(pp->ofpacts); |
c2d936a4 BP |
4120 | tunnel->ofpact.raw = raw; |
4121 | return str_to_u64(arg, &tunnel->tun_id); | |
4122 | } | |
8621547c | 4123 | |
cab50449 | 4124 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4125 | parse_SET_TUNNEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 4126 | { |
efefbcae | 4127 | return parse_set_tunnel(arg, NXAST_RAW_SET_TUNNEL, pp); |
c2d936a4 | 4128 | } |
8621547c | 4129 | |
c2d936a4 | 4130 | static void |
50f96b10 | 4131 | format_SET_TUNNEL(const struct ofpact_tunnel *a, |
efefbcae | 4132 | const struct ofpact_format_params *fp) |
c2d936a4 | 4133 | { |
efefbcae | 4134 | ds_put_format(fp->s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
4135 | (a->tun_id > UINT32_MAX |
4136 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 4137 | colors.end, a->tun_id); |
c2d936a4 | 4138 | } |
ae6f7530 BP |
4139 | |
4140 | static enum ofperr | |
4141 | check_SET_TUNNEL(const struct ofpact_tunnel *a OVS_UNUSED, | |
4142 | const struct ofpact_check_params *cp OVS_UNUSED) | |
4143 | { | |
4144 | return 0; | |
4145 | } | |
c2d936a4 | 4146 | \f |
81f71381 YHW |
4147 | /* Delete field action. */ |
4148 | ||
4149 | /* Action structure for DELETE_FIELD */ | |
4150 | struct nx_action_delete_field { | |
4151 | ovs_be16 type; /* OFPAT_VENDOR */ | |
4152 | ovs_be16 len; /* Length is 24. */ | |
4153 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4154 | ovs_be16 subtype; /* NXAST_DELETE_FIELD. */ | |
4155 | /* Followed by: | |
4156 | * - OXM/NXM header for field to delete (4 or 8 bytes). | |
4157 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
4158 | uint8_t pad[14]; | |
4159 | }; | |
4160 | OFP_ASSERT(sizeof(struct nx_action_delete_field ) == 24); | |
4161 | ||
4162 | static enum ofperr | |
4163 | decode_NXAST_RAW_DELETE_FIELD(const struct nx_action_delete_field *nadf, | |
4164 | enum ofp_version ofp_version OVS_UNUSED, | |
4165 | const struct vl_mff_map *vl_mff_map, | |
4166 | uint64_t *tlv_bitmap, struct ofpbuf *out) | |
4167 | { | |
4168 | struct ofpact_delete_field *delete_field; | |
4169 | enum ofperr err; | |
4170 | ||
4171 | delete_field = ofpact_put_DELETE_FIELD(out); | |
4172 | delete_field->ofpact.raw = NXAST_RAW_DELETE_FIELD; | |
4173 | ||
4174 | struct ofpbuf b = ofpbuf_const_initializer(nadf, ntohs(nadf->len)); | |
4175 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nadf, pad)); | |
4176 | ||
4177 | err = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &delete_field->field, | |
4178 | NULL, tlv_bitmap); | |
4179 | if (err) { | |
4180 | return err; | |
4181 | } | |
4182 | ||
4183 | return 0; | |
4184 | } | |
4185 | ||
4186 | static void | |
4187 | encode_DELETE_FIELD(const struct ofpact_delete_field *delete_field, | |
4188 | enum ofp_version ofp_version OVS_UNUSED, | |
4189 | struct ofpbuf *out) | |
4190 | { | |
4191 | struct nx_action_delete_field *nadf = put_NXAST_DELETE_FIELD(out); | |
4192 | size_t size = out->size; | |
4193 | ||
4194 | out->size = size - sizeof nadf->pad; | |
4195 | nx_put_mff_header(out, delete_field->field, 0, false); | |
4196 | out->size = size; | |
4197 | } | |
4198 | ||
4199 | static char * OVS_WARN_UNUSED_RESULT | |
4200 | parse_DELETE_FIELD(char *arg, const struct ofpact_parse_params *pp) | |
4201 | { | |
4202 | struct ofpact_delete_field *delete_field; | |
4203 | ||
4204 | delete_field = ofpact_put_DELETE_FIELD(pp->ofpacts); | |
4205 | return mf_parse_field(&delete_field->field, arg); | |
4206 | } | |
4207 | ||
4208 | static void | |
4209 | format_DELETE_FIELD(const struct ofpact_delete_field *odf, | |
4210 | const struct ofpact_format_params *fp) | |
4211 | { | |
4212 | ds_put_format(fp->s, "%sdelete_field:%s", colors.param, | |
4213 | colors.end); | |
4214 | ds_put_format(fp->s, "%s", odf->field->name); | |
4215 | } | |
4216 | ||
4217 | static enum ofperr | |
4218 | check_DELETE_FIELD(const struct ofpact_delete_field *odf, | |
4219 | struct ofpact_check_params *cp OVS_UNUSED) | |
4220 | { | |
4221 | if (odf->field->id < MFF_TUN_METADATA0 || | |
4222 | odf->field->id > MFF_TUN_METADATA63) { | |
4223 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4224 | } | |
4225 | return 0; | |
4226 | } | |
4227 | \f | |
c2d936a4 | 4228 | /* Set queue action. */ |
8621547c | 4229 | |
c2d936a4 | 4230 | static enum ofperr |
f3cd3ac7 JS |
4231 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
4232 | enum ofp_version ofp_version OVS_UNUSED, | |
4233 | struct ofpbuf *out) | |
c2d936a4 BP |
4234 | { |
4235 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
4236 | return 0; | |
4237 | } | |
8621547c | 4238 | |
c2d936a4 BP |
4239 | static void |
4240 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
4241 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4242 | { | |
4243 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
4244 | } | |
8621547c | 4245 | |
cab50449 | 4246 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4247 | parse_SET_QUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 4248 | { |
efefbcae | 4249 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(pp->ofpacts)->queue_id); |
c2d936a4 | 4250 | } |
8621547c | 4251 | |
c2d936a4 | 4252 | static void |
50f96b10 | 4253 | format_SET_QUEUE(const struct ofpact_queue *a, |
efefbcae | 4254 | const struct ofpact_format_params *fp) |
c2d936a4 | 4255 | { |
efefbcae | 4256 | ds_put_format(fp->s, "%sset_queue:%s%"PRIu32, |
b1c5bf1f | 4257 | colors.param, colors.end, a->queue_id); |
c2d936a4 | 4258 | } |
ae6f7530 BP |
4259 | |
4260 | static enum ofperr | |
4261 | check_SET_QUEUE(const struct ofpact_queue *a OVS_UNUSED, | |
4262 | const struct ofpact_check_params *cp OVS_UNUSED) | |
4263 | { | |
4264 | return 0; | |
4265 | } | |
c2d936a4 BP |
4266 | \f |
4267 | /* Pop queue action. */ | |
1e7db674 | 4268 | |
c2d936a4 BP |
4269 | static enum ofperr |
4270 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
4271 | { | |
4272 | ofpact_put_POP_QUEUE(out); | |
4273 | return 0; | |
4274 | } | |
f25d0cf3 | 4275 | |
c2d936a4 BP |
4276 | static void |
4277 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
4278 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4279 | { | |
4280 | put_NXAST_POP_QUEUE(out); | |
4281 | } | |
f25d0cf3 | 4282 | |
cab50449 | 4283 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 4284 | parse_POP_QUEUE(const char *arg OVS_UNUSED, |
efefbcae | 4285 | const struct ofpact_parse_params *pp) |
c2d936a4 | 4286 | { |
efefbcae | 4287 | ofpact_put_POP_QUEUE(pp->ofpacts); |
c2d936a4 BP |
4288 | return NULL; |
4289 | } | |
f25d0cf3 | 4290 | |
c2d936a4 | 4291 | static void |
50f96b10 | 4292 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 4293 | const struct ofpact_format_params *fp) |
c2d936a4 | 4294 | { |
efefbcae | 4295 | ds_put_format(fp->s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 | 4296 | } |
ae6f7530 BP |
4297 | |
4298 | static enum ofperr | |
4299 | check_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, | |
4300 | const struct ofpact_check_params *cp OVS_UNUSED) | |
4301 | { | |
4302 | return 0; | |
4303 | } | |
c2d936a4 BP |
4304 | \f |
4305 | /* Action structure for NXAST_FIN_TIMEOUT. | |
4306 | * | |
4307 | * This action changes the idle timeout or hard timeout, or both, of this | |
4308 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
4309 | * When such a packet is observed, the action reduces the rule's idle timeout | |
4310 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
4311 | * action has no effect on an existing timeout that is already shorter than the | |
4312 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
4313 | * of zero has no effect on the respective timeout. | |
4314 | * | |
4315 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
4316 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
4317 | * receipt of the FIN or RST. | |
4318 | * | |
4319 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
4320 | * take a long time to expire. | |
4321 | * | |
4322 | * This action is intended for use with an OpenFlow rule that matches only a | |
4323 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
4324 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
4325 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
4326 | * early, which is not normally desirable. | |
4327 | */ | |
4328 | struct nx_action_fin_timeout { | |
4329 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4330 | ovs_be16 len; /* 16. */ | |
4331 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4332 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
4333 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
4334 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
4335 | ovs_be16 pad; /* Must be zero. */ | |
4336 | }; | |
4337 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 4338 | |
c2d936a4 BP |
4339 | static enum ofperr |
4340 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 4341 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4342 | struct ofpbuf *out) |
4343 | { | |
4344 | struct ofpact_fin_timeout *oft; | |
8621547c | 4345 | |
c2d936a4 BP |
4346 | oft = ofpact_put_FIN_TIMEOUT(out); |
4347 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
4348 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
4349 | return 0; | |
4350 | } | |
f25d0cf3 | 4351 | |
c2d936a4 BP |
4352 | static void |
4353 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
4354 | enum ofp_version ofp_version OVS_UNUSED, | |
4355 | struct ofpbuf *out) | |
4356 | { | |
4357 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
4358 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
4359 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
4360 | } | |
f25d0cf3 | 4361 | |
cab50449 | 4362 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4363 | parse_FIN_TIMEOUT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 4364 | { |
efefbcae | 4365 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(pp->ofpacts); |
c2d936a4 | 4366 | char *key, *value; |
f25d0cf3 | 4367 | |
c2d936a4 BP |
4368 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
4369 | char *error; | |
b02475c5 | 4370 | |
c2d936a4 BP |
4371 | if (!strcmp(key, "idle_timeout")) { |
4372 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
4373 | } else if (!strcmp(key, "hard_timeout")) { | |
4374 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
4375 | } else { | |
4376 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
4377 | key); | |
8621547c | 4378 | } |
8dd54666 | 4379 | |
c2d936a4 BP |
4380 | if (error) { |
4381 | return error; | |
9cae45dc | 4382 | } |
9cae45dc | 4383 | } |
c2d936a4 BP |
4384 | return NULL; |
4385 | } | |
e3b56933 | 4386 | |
c2d936a4 | 4387 | static void |
50f96b10 | 4388 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, |
efefbcae | 4389 | const struct ofpact_format_params *fp) |
c2d936a4 | 4390 | { |
efefbcae | 4391 | ds_put_format(fp->s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 4392 | if (a->fin_idle_timeout) { |
efefbcae | 4393 | ds_put_format(fp->s, "%sidle_timeout=%s%"PRIu16",", |
b1c5bf1f | 4394 | colors.param, colors.end, a->fin_idle_timeout); |
7e9f8266 | 4395 | } |
c2d936a4 | 4396 | if (a->fin_hard_timeout) { |
efefbcae | 4397 | ds_put_format(fp->s, "%shard_timeout=%s%"PRIu16",", |
b1c5bf1f | 4398 | colors.param, colors.end, a->fin_hard_timeout); |
f25d0cf3 | 4399 | } |
efefbcae BP |
4400 | ds_chomp(fp->s, ','); |
4401 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f25d0cf3 | 4402 | } |
f839892a | 4403 | |
ae6f7530 BP |
4404 | |
4405 | static enum ofperr | |
4406 | check_FIN_TIMEOUT(const struct ofpact_fin_timeout *a OVS_UNUSED, | |
4407 | struct ofpact_check_params *cp) | |
4408 | { | |
4409 | if (cp->match->flow.nw_proto != IPPROTO_TCP) { | |
4410 | inconsistent_match(&cp->usable_protocols); | |
4411 | } | |
4412 | return 0; | |
4413 | } | |
4414 | \f | |
f839892a JS |
4415 | /* Action structure for NXAST_ENCAP */ |
4416 | struct nx_action_encap { | |
4417 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4418 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4419 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4420 | ovs_be16 subtype; /* NXAST_ENCAP. */ | |
4421 | ovs_be16 hdr_size; /* Header size in bytes, 0 = 'not specified'.*/ | |
4422 | ovs_be32 new_pkt_type; /* Header type to add and PACKET_TYPE of result. */ | |
4423 | struct ofp_ed_prop_header props[]; /* Encap TLV properties. */ | |
4424 | }; | |
4425 | OFP_ASSERT(sizeof(struct nx_action_encap) == 16); | |
4426 | ||
4427 | static enum ofperr | |
4428 | decode_NXAST_RAW_ENCAP(const struct nx_action_encap *nae, | |
4429 | enum ofp_version ofp_version OVS_UNUSED, | |
4430 | struct ofpbuf *out) | |
4431 | { | |
4432 | struct ofpact_encap *encap; | |
4433 | const struct ofp_ed_prop_header *ofp_prop; | |
4434 | size_t props_len; | |
4435 | uint16_t n_props = 0; | |
4436 | int err; | |
4437 | ||
4438 | encap = ofpact_put_ENCAP(out); | |
4439 | encap->ofpact.raw = NXAST_RAW_ENCAP; | |
4440 | switch (ntohl(nae->new_pkt_type)) { | |
4441 | case PT_ETH: | |
1fc11c59 | 4442 | case PT_NSH: |
f839892a JS |
4443 | /* Add supported encap header types here. */ |
4444 | break; | |
4445 | default: | |
4446 | return OFPERR_NXBAC_BAD_HEADER_TYPE; | |
4447 | } | |
4448 | encap->new_pkt_type = nae->new_pkt_type; | |
4449 | encap->hdr_size = ntohs(nae->hdr_size); | |
4450 | ||
4451 | ofp_prop = nae->props; | |
4452 | props_len = ntohs(nae->len) - offsetof(struct nx_action_encap, props); | |
4453 | n_props = 0; | |
4454 | while (props_len > 0) { | |
4455 | err = decode_ed_prop(&ofp_prop, out, &props_len); | |
4456 | if (err) { | |
4457 | return err; | |
4458 | } | |
4459 | n_props++; | |
4460 | } | |
4461 | encap->n_props = n_props; | |
4462 | out->header = &encap->ofpact; | |
4463 | ofpact_finish_ENCAP(out, &encap); | |
4464 | ||
4465 | return 0; | |
4466 | } | |
4467 | ||
4468 | static void | |
4469 | encode_ENCAP(const struct ofpact_encap *encap, | |
4470 | enum ofp_version ofp_version OVS_UNUSED, | |
4471 | struct ofpbuf *out) | |
4472 | { | |
4473 | size_t start_ofs = out->size; | |
4474 | struct nx_action_encap *nae = put_NXAST_ENCAP(out); | |
4475 | int i; | |
4476 | ||
4477 | nae->new_pkt_type = encap->new_pkt_type; | |
4478 | nae->hdr_size = htons(encap->hdr_size); | |
4479 | const struct ofpact_ed_prop *prop = encap->props; | |
4480 | for (i = 0; i < encap->n_props; i++) { | |
4481 | encode_ed_prop(&prop, out); | |
4482 | } | |
4483 | pad_ofpat(out, start_ofs); | |
4484 | } | |
4485 | ||
4486 | static bool | |
4487 | parse_encap_header(const char *hdr, ovs_be32 *packet_type) | |
4488 | { | |
4489 | if (strcmp(hdr, "ethernet") == 0) { | |
4490 | *packet_type = htonl(PT_ETH); | |
1fc11c59 JS |
4491 | } else if (strcmp(hdr, "nsh") == 0) { |
4492 | *packet_type = htonl(PT_NSH); | |
f839892a JS |
4493 | } else { |
4494 | return false; | |
4495 | } | |
4496 | return true; | |
4497 | } | |
4498 | ||
4499 | static char * | |
4500 | parse_ed_props(const uint16_t prop_class, char **arg, int *n_props, struct ofpbuf *out) | |
4501 | { | |
4502 | char *key, *value, *err; | |
4503 | uint8_t prop_type; | |
4504 | ||
4505 | while (ofputil_parse_key_value(arg, &key, &value)) { | |
4506 | if (!parse_ed_prop_type(prop_class, key, &prop_type)) { | |
4507 | return xasprintf("Invalid property: %s", key); | |
4508 | } | |
4509 | if (value == NULL) { | |
4510 | return xasprintf("Missing the value for property: %s", key); | |
4511 | } | |
4512 | err = parse_ed_prop_value(prop_class, prop_type, value, out); | |
4513 | if (err != NULL) { | |
4514 | return err; | |
4515 | } | |
4516 | (*n_props)++; | |
4517 | } | |
4518 | return NULL; | |
4519 | } | |
4520 | ||
4521 | /* The string representation of the encap action is | |
4522 | * encap(header_type(prop=<value>,tlv(<class>,<type>,<value>),...)) | |
4523 | */ | |
4524 | ||
4525 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4526 | parse_ENCAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a | 4527 | { |
0cb2fe2f BP |
4528 | *pp->usable_protocols &= OFPUTIL_P_OF13_UP; |
4529 | ||
f839892a JS |
4530 | struct ofpact_encap *encap; |
4531 | char *key, *value, *str; | |
4532 | char *error = NULL; | |
4533 | uint16_t prop_class; | |
4534 | int n_props = 0; | |
4535 | ||
efefbcae | 4536 | encap = ofpact_put_ENCAP(pp->ofpacts); |
f839892a JS |
4537 | encap->hdr_size = 0; |
4538 | /* Parse encap header type. */ | |
4539 | str = arg; | |
4540 | if (!ofputil_parse_key_value(&arg, &key, &value)) { | |
4541 | return xasprintf("Missing encap hdr: %s", str); | |
4542 | } | |
4543 | if (!parse_encap_header(key, &encap->new_pkt_type)) { | |
4544 | return xasprintf("Encap hdr not supported: %s", value); | |
4545 | } | |
4546 | if (!parse_ed_prop_class(key, &prop_class)) { | |
4547 | return xasprintf("Invalid encap prop class: %s", key); | |
4548 | } | |
4549 | /* Parse encap properties. */ | |
efefbcae | 4550 | error = parse_ed_props(prop_class, &value, &n_props, pp->ofpacts); |
f839892a JS |
4551 | if (error != NULL) { |
4552 | return error; | |
4553 | } | |
efefbcae BP |
4554 | /* ofpbuf may have been re-allocated. */ |
4555 | encap = pp->ofpacts->header; | |
f839892a | 4556 | encap->n_props = n_props; |
8e738337 TA |
4557 | |
4558 | if (ofpbuf_oversized(pp->ofpacts)) { | |
4559 | return xasprintf("input too big"); | |
4560 | } | |
4561 | ||
efefbcae | 4562 | ofpact_finish_ENCAP(pp->ofpacts, &encap); |
f839892a JS |
4563 | return NULL; |
4564 | } | |
4565 | ||
4566 | static char * | |
4567 | format_encap_pkt_type(const ovs_be32 pkt_type) | |
4568 | { | |
4569 | switch (ntohl(pkt_type)) { | |
4570 | case PT_ETH: | |
4571 | return "ethernet"; | |
1fc11c59 JS |
4572 | case PT_NSH: |
4573 | return "nsh"; | |
f839892a JS |
4574 | default: |
4575 | return "UNKNOWN"; | |
4576 | } | |
4577 | } | |
4578 | ||
4579 | static void | |
4580 | format_ed_props(struct ds *s, uint16_t n_props, | |
4581 | const struct ofpact_ed_prop *prop) | |
4582 | { | |
4583 | const uint8_t *p = (uint8_t *) prop; | |
4584 | int i; | |
4585 | ||
4586 | if (n_props == 0) { | |
4587 | return; | |
4588 | } | |
4589 | for (i = 0; i < n_props; i++) { | |
4590 | format_ed_prop(s, prop); | |
4591 | ds_put_char(s, ','); | |
4592 | p += ROUND_UP(prop->len, 8); | |
4593 | prop = ALIGNED_CAST(const struct ofpact_ed_prop *, p); | |
4594 | } | |
4595 | if (n_props > 0) { | |
4596 | ds_chomp(s, ','); | |
4597 | } | |
4598 | } | |
4599 | ||
4600 | static void | |
4601 | format_ENCAP(const struct ofpact_encap *a, | |
efefbcae | 4602 | const struct ofpact_format_params *fp) |
f839892a | 4603 | { |
efefbcae BP |
4604 | ds_put_format(fp->s, "%sencap(%s", colors.paren, colors.end); |
4605 | ds_put_format(fp->s, "%s", format_encap_pkt_type(a->new_pkt_type)); | |
f839892a | 4606 | if (a->n_props > 0) { |
efefbcae BP |
4607 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
4608 | format_ed_props(fp->s, a->n_props, a->props); | |
4609 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f839892a | 4610 | } |
efefbcae | 4611 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4612 | } |
4613 | ||
ae6f7530 BP |
4614 | static enum ofperr |
4615 | check_ENCAP(const struct ofpact_encap *a, struct ofpact_check_params *cp) | |
4616 | { | |
4617 | struct flow *flow = &cp->match->flow; | |
4618 | flow->packet_type = a->new_pkt_type; | |
4619 | if (pt_ns(flow->packet_type) == OFPHTN_ETHERTYPE) { | |
4620 | flow->dl_type = htons(pt_ns_type(flow->packet_type)); | |
4621 | } | |
4622 | if (!is_ip_any(flow)) { | |
4623 | flow->nw_proto = 0; | |
4624 | } | |
4625 | return 0; | |
4626 | } | |
4627 | \f | |
f839892a JS |
4628 | /* Action structure for NXAST_DECAP */ |
4629 | struct nx_action_decap { | |
4630 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4631 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4632 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4633 | ovs_be16 subtype; /* NXAST_DECAP. */ | |
4634 | uint8_t pad[2]; /* 2 bytes padding */ | |
4635 | ||
4636 | /* Packet type or result. | |
4637 | * | |
4638 | * The special value (0,0xFFFE) "Use next proto" | |
4639 | * is used to request OVS to automatically set the new packet type based | |
4640 | * on the decap'ed header's next protocol. | |
4641 | */ | |
4642 | ovs_be32 new_pkt_type; | |
4643 | }; | |
4644 | OFP_ASSERT(sizeof(struct nx_action_decap) == 16); | |
4645 | ||
4646 | static enum ofperr | |
4647 | decode_NXAST_RAW_DECAP(const struct nx_action_decap *nad, | |
4648 | enum ofp_version ofp_version OVS_UNUSED, | |
4649 | struct ofpbuf *ofpacts) | |
4650 | { | |
4651 | struct ofpact_decap * decap; | |
4652 | ||
4653 | if (ntohs(nad->len) > sizeof *nad) { | |
4654 | /* No properties supported yet. */ | |
4655 | return OFPERR_NXBAC_UNKNOWN_ED_PROP; | |
4656 | } | |
4657 | ||
4658 | decap = ofpact_put_DECAP(ofpacts); | |
4659 | decap->ofpact.raw = NXAST_RAW_DECAP; | |
4660 | decap->new_pkt_type = nad->new_pkt_type; | |
4661 | return 0; | |
4662 | } | |
4663 | ||
4664 | static void | |
4665 | encode_DECAP(const struct ofpact_decap *decap, | |
4666 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4667 | { | |
4668 | struct nx_action_decap *nad = put_NXAST_DECAP(out); | |
4669 | ||
4670 | nad->len = htons(sizeof(struct nx_action_decap)); | |
4671 | nad->new_pkt_type = decap->new_pkt_type; | |
4672 | } | |
4673 | ||
4674 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4675 | parse_DECAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a JS |
4676 | { |
4677 | struct ofpact_decap *decap; | |
4678 | char *key, *value, *pos; | |
4679 | char *error = NULL; | |
4680 | uint16_t ns, type; | |
4681 | ||
efefbcae | 4682 | decap = ofpact_put_DECAP(pp->ofpacts); |
f839892a JS |
4683 | /* Default next packet_type is PT_USE_NEXT_PROTO. */ |
4684 | decap->new_pkt_type = htonl(PT_USE_NEXT_PROTO); | |
4685 | ||
4686 | /* Parse decap packet_type if given. */ | |
4687 | if (ofputil_parse_key_value(&arg, &key, &value)) { | |
4688 | if (strcmp(key, "packet_type") == 0) { | |
4689 | pos = value; | |
4690 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4691 | || strcmp(key, "ns") != 0) { | |
4692 | return xstrdup("Missing packet_type attribute ns"); | |
4693 | } | |
4694 | error = str_to_u16(value, "ns", &ns); | |
4695 | if (error) { | |
4696 | return error; | |
4697 | } | |
4698 | if (ns >= OFPHTN_N_TYPES) { | |
4699 | return xasprintf("Unsupported ns value: %"PRIu16, ns); | |
4700 | } | |
4701 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4702 | || strcmp(key, "type") != 0) { | |
4703 | return xstrdup("Missing packet_type attribute type"); | |
4704 | } | |
4705 | error = str_to_u16(value, "type", &type); | |
4706 | if (error) { | |
4707 | return error; | |
4708 | } | |
4709 | decap->new_pkt_type = htonl(PACKET_TYPE(ns, type)); | |
4710 | } else { | |
4711 | return xasprintf("Invalid decap argument: %s", key); | |
4712 | } | |
4713 | } | |
4714 | return NULL; | |
4715 | } | |
4716 | ||
4717 | static void | |
4718 | format_DECAP(const struct ofpact_decap *a, | |
efefbcae | 4719 | const struct ofpact_format_params *fp) |
f839892a | 4720 | { |
efefbcae | 4721 | ds_put_format(fp->s, "%sdecap(%s", colors.paren, colors.end); |
f839892a | 4722 | if (a->new_pkt_type != htonl(PT_USE_NEXT_PROTO)) { |
1ca20357 | 4723 | ds_put_format(fp->s, "packet_type(ns=%"PRIu16",type=%#"PRIx16")", |
f839892a JS |
4724 | pt_ns(a->new_pkt_type), |
4725 | pt_ns_type(a->new_pkt_type)); | |
4726 | } | |
efefbcae | 4727 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4728 | } |
4729 | ||
ae6f7530 BP |
4730 | static enum ofperr |
4731 | check_DECAP(const struct ofpact_decap *a OVS_UNUSED, | |
4732 | struct ofpact_check_params *cp) | |
4733 | { | |
4734 | struct flow *flow = &cp->match->flow; | |
4735 | if (flow->packet_type == htonl(PT_ETH)) { | |
4736 | /* Adjust the packet_type to allow subsequent actions. */ | |
4737 | flow->packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, | |
4738 | ntohs(flow->dl_type)); | |
4739 | } else { | |
4740 | /* The actual packet_type is only known after decapsulation. | |
4741 | * Do not allow subsequent actions that depend on packet headers. */ | |
4742 | flow->packet_type = htonl(PT_UNKNOWN); | |
4743 | flow->dl_type = OVS_BE16_MAX; | |
4744 | } | |
4745 | return 0; | |
4746 | } | |
4747 | ||
491e05c2 YY |
4748 | /* Action dec_nsh_ttl */ |
4749 | ||
4750 | static enum ofperr | |
4751 | decode_NXAST_RAW_DEC_NSH_TTL(struct ofpbuf *out) | |
4752 | { | |
4753 | ofpact_put_DEC_NSH_TTL(out); | |
4754 | return 0; | |
4755 | } | |
4756 | ||
4757 | static void | |
4758 | encode_DEC_NSH_TTL(const struct ofpact_null *null OVS_UNUSED, | |
4759 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4760 | { | |
4761 | put_NXAST_DEC_NSH_TTL(out); | |
4762 | } | |
4763 | ||
4764 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4765 | parse_DEC_NSH_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
491e05c2 | 4766 | { |
efefbcae | 4767 | ofpact_put_DEC_NSH_TTL(pp->ofpacts); |
491e05c2 YY |
4768 | return NULL; |
4769 | } | |
4770 | ||
4771 | static void | |
4772 | format_DEC_NSH_TTL(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 4773 | const struct ofpact_format_params *fp) |
491e05c2 | 4774 | { |
efefbcae | 4775 | ds_put_format(fp->s, "%sdec_nsh_ttl%s", colors.special, colors.end); |
491e05c2 YY |
4776 | } |
4777 | ||
ae6f7530 BP |
4778 | static enum ofperr |
4779 | check_DEC_NSH_TTL(const struct ofpact_null *a OVS_UNUSED, | |
4780 | struct ofpact_check_params *cp) | |
4781 | { | |
4782 | struct flow *flow = &cp->match->flow; | |
4783 | if (flow->packet_type != htonl(PT_NSH) && | |
4784 | flow->dl_type != htons(ETH_TYPE_NSH)) { | |
4785 | inconsistent_match(&cp->usable_protocols); | |
4786 | } | |
4787 | return 0; | |
4788 | } | |
c2d936a4 | 4789 | \f |
2cd20955 JR |
4790 | /* Action structures for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE, and |
4791 | * NXAST_RESUBMIT_TABLE_CT. | |
eca39bce | 4792 | * |
c2d936a4 | 4793 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 4794 | * |
2cd20955 JR |
4795 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the |
4796 | * 'table' member is not 255, then it specifies the table to search. | |
ca287d20 | 4797 | * |
2cd20955 JR |
4798 | * - Otherwise (for NXAST_RESUBMIT_TABLE or NXAST_RESUBMIT_TABLE_CT with a |
4799 | * 'table' of 255, or for NXAST_RESUBMIT regardless of 'table'), it | |
4800 | * searches the current flow table, that is, the OpenFlow flow table that | |
4801 | * contains the flow from which this action was obtained. If this action | |
4802 | * did not come from a flow table (e.g. it came from an OFPT_PACKET_OUT | |
4803 | * message), then table 0 is the current table. | |
c2d936a4 BP |
4804 | * |
4805 | * The flow table lookup uses a flow that may be slightly modified from the | |
4806 | * original lookup: | |
4807 | * | |
4808 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
4809 | * is used as the flow's in_port. | |
4810 | * | |
2cd20955 JR |
4811 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the 'in_port' |
4812 | * member is not OFPP_IN_PORT, then its value is used as the flow's | |
4813 | * in_port. Otherwise, the original in_port is used. | |
4814 | * | |
4815 | * - For NXAST_RESUBMIT_TABLE_CT the Conntrack 5-tuple fields are used as | |
4816 | * the packets IP header fields during the lookup. | |
c2d936a4 BP |
4817 | * |
4818 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
4819 | * resubmit action, then the flow is updated with the new values. | |
4820 | * | |
4821 | * Following the lookup, the original in_port is restored. | |
4822 | * | |
4823 | * If the modified flow matched in the flow table, then the corresponding | |
4824 | * actions are executed. Afterward, actions following the resubmit in the | |
4825 | * original set of actions, if any, are executed; any changes made to the | |
4826 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
4827 | * actions are executed, although the original in_port is restored. | |
4828 | * | |
4829 | * Resubmit actions may be used any number of times within a set of actions. | |
4830 | * | |
790c5d26 BP |
4831 | * Resubmit actions may nest. To prevent infinite loops and excessive resource |
4832 | * use, the implementation may limit nesting depth and the total number of | |
4833 | * resubmits: | |
4834 | * | |
4835 | * - Open vSwitch 1.0.1 and earlier did not support recursion. | |
4836 | * | |
4837 | * - Open vSwitch 1.0.2 and 1.0.3 limited recursion to 8 levels. | |
4838 | * | |
4839 | * - Open vSwitch 1.1 and 1.2 limited recursion to 16 levels. | |
4840 | * | |
4841 | * - Open vSwitch 1.2 through 1.8 limited recursion to 32 levels. | |
4842 | * | |
4843 | * - Open vSwitch 1.9 through 2.0 limited recursion to 64 levels. | |
4844 | * | |
4845 | * - Open vSwitch 2.1 through 2.5 limited recursion to 64 levels and impose | |
4846 | * a total limit of 4,096 resubmits per flow translation (earlier versions | |
4847 | * did not impose any total limit). | |
c2d936a4 | 4848 | * |
2cd20955 JR |
4849 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE and |
4850 | * NXAST_RESUBMIT_TABLE_CT require 'pad' to be all-bits-zero. | |
c2d936a4 BP |
4851 | * |
4852 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
2cd20955 JR |
4853 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. Open vSwitch before |
4854 | * 2.8.0 did not support NXAST_RESUBMIT_TABLE_CT. | |
c2d936a4 BP |
4855 | */ |
4856 | struct nx_action_resubmit { | |
4857 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4858 | ovs_be16 len; /* Length is 16. */ | |
4859 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4860 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
4861 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
4862 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
4863 | uint8_t pad[3]; | |
4864 | }; | |
4865 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
4866 | ||
4867 | static enum ofperr | |
f3cd3ac7 JS |
4868 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
4869 | enum ofp_version ofp_version OVS_UNUSED, | |
4870 | struct ofpbuf *out) | |
f25d0cf3 | 4871 | { |
c2d936a4 | 4872 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 4873 | |
c2d936a4 BP |
4874 | resubmit = ofpact_put_RESUBMIT(out); |
4875 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
4876 | resubmit->in_port = u16_to_ofp(port); | |
4877 | resubmit->table_id = 0xff; | |
4878 | return 0; | |
f25d0cf3 | 4879 | } |
4cceacb9 | 4880 | |
c2d936a4 BP |
4881 | static enum ofperr |
4882 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 4883 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 4884 | struct ofpbuf *out) |
ba2fe8e9 | 4885 | { |
c2d936a4 | 4886 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 4887 | |
c2d936a4 BP |
4888 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
4889 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4890 | } | |
4891 | ||
4892 | resubmit = ofpact_put_RESUBMIT(out); | |
4893 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
4894 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
4895 | resubmit->table_id = nar->table; | |
4896 | return 0; | |
ba2fe8e9 BP |
4897 | } |
4898 | ||
2cd20955 JR |
4899 | static enum ofperr |
4900 | decode_NXAST_RAW_RESUBMIT_TABLE_CT(const struct nx_action_resubmit *nar, | |
4901 | enum ofp_version ofp_version OVS_UNUSED, | |
4902 | struct ofpbuf *out) | |
4903 | { | |
4904 | enum ofperr error = decode_NXAST_RAW_RESUBMIT_TABLE(nar, ofp_version, out); | |
4905 | if (error) { | |
4906 | return error; | |
4907 | } | |
4908 | struct ofpact_resubmit *resubmit = out->header; | |
4909 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE_CT; | |
4910 | resubmit->with_ct_orig = true; | |
4911 | return 0; | |
4912 | } | |
4913 | ||
c2d936a4 BP |
4914 | static void |
4915 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
4916 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 4917 | { |
c2d936a4 | 4918 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 4919 | |
c2d936a4 | 4920 | if (resubmit->table_id == 0xff |
2cd20955 | 4921 | && resubmit->ofpact.raw == NXAST_RAW_RESUBMIT) { |
c2d936a4 BP |
4922 | put_NXAST_RESUBMIT(out, in_port); |
4923 | } else { | |
2cd20955 JR |
4924 | struct nx_action_resubmit *nar; |
4925 | nar = resubmit->with_ct_orig | |
4926 | ? put_NXAST_RESUBMIT_TABLE_CT(out) : put_NXAST_RESUBMIT_TABLE(out); | |
c2d936a4 BP |
4927 | nar->table = resubmit->table_id; |
4928 | nar->in_port = htons(in_port); | |
4929 | } | |
4930 | } | |
6813ee7c | 4931 | |
cab50449 | 4932 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4933 | parse_RESUBMIT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
4934 | { |
4935 | struct ofpact_resubmit *resubmit; | |
2cd20955 | 4936 | char *in_port_s, *table_s, *ct_s; |
6813ee7c | 4937 | |
efefbcae | 4938 | resubmit = ofpact_put_RESUBMIT(pp->ofpacts); |
8f2cded4 | 4939 | |
c2d936a4 BP |
4940 | in_port_s = strsep(&arg, ","); |
4941 | if (in_port_s && in_port_s[0]) { | |
efefbcae | 4942 | if (!ofputil_port_from_string(in_port_s, pp->port_map, |
50f96b10 | 4943 | &resubmit->in_port)) { |
c2d936a4 | 4944 | return xasprintf("%s: resubmit to unknown port", in_port_s); |
8f2cded4 | 4945 | } |
c2d936a4 BP |
4946 | } else { |
4947 | resubmit->in_port = OFPP_IN_PORT; | |
4948 | } | |
4cceacb9 | 4949 | |
c2d936a4 BP |
4950 | table_s = strsep(&arg, ","); |
4951 | if (table_s && table_s[0]) { | |
4bc938cc BP |
4952 | if (!ofputil_table_from_string(table_s, pp->table_map, |
4953 | &resubmit->table_id)) { | |
4954 | return xasprintf("%s: resubmit to unknown table", table_s); | |
c2d936a4 | 4955 | } |
c2d936a4 BP |
4956 | } else { |
4957 | resubmit->table_id = 255; | |
4cceacb9 JS |
4958 | } |
4959 | ||
2cd20955 JR |
4960 | ct_s = strsep(&arg, ","); |
4961 | if (ct_s && ct_s[0]) { | |
4962 | if (strcmp(ct_s, "ct")) { | |
4963 | return xasprintf("%s: unknown parameter", ct_s); | |
4964 | } | |
4965 | resubmit->with_ct_orig = true; | |
4966 | } else { | |
4967 | resubmit->with_ct_orig = false; | |
4968 | } | |
4969 | ||
c2d936a4 BP |
4970 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
4971 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
9f0721e9 | 4972 | "specified on resubmit"); |
c2d936a4 BP |
4973 | } |
4974 | return NULL; | |
4975 | } | |
4976 | ||
4977 | static void | |
50f96b10 | 4978 | format_RESUBMIT(const struct ofpact_resubmit *a, |
efefbcae | 4979 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
4980 | { |
4981 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
efefbcae BP |
4982 | ds_put_format(fp->s, "%sresubmit:%s", colors.special, colors.end); |
4983 | ofputil_format_port(a->in_port, fp->port_map, fp->s); | |
c2d936a4 | 4984 | } else { |
efefbcae | 4985 | ds_put_format(fp->s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 | 4986 | if (a->in_port != OFPP_IN_PORT) { |
efefbcae | 4987 | ofputil_format_port(a->in_port, fp->port_map, fp->s); |
c2d936a4 | 4988 | } |
efefbcae | 4989 | ds_put_char(fp->s, ','); |
c2d936a4 | 4990 | if (a->table_id != 255) { |
4bc938cc | 4991 | ofputil_format_table(a->table_id, fp->table_map, fp->s); |
c2d936a4 | 4992 | } |
2cd20955 | 4993 | if (a->with_ct_orig) { |
efefbcae | 4994 | ds_put_cstr(fp->s, ",ct"); |
2cd20955 | 4995 | } |
efefbcae | 4996 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
4997 | } |
4998 | } | |
ae6f7530 BP |
4999 | |
5000 | static enum ofperr | |
5001 | check_RESUBMIT(const struct ofpact_resubmit *a, | |
5002 | const struct ofpact_check_params *cp) | |
5003 | { | |
5004 | if (a->with_ct_orig && !is_ct_valid(&cp->match->flow, &cp->match->wc, | |
5005 | NULL)) { | |
5006 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
5007 | } | |
5008 | return 0; | |
5009 | } | |
c2d936a4 | 5010 | \f |
4c71600d | 5011 | /* Action structure for NXAST_LEARN and NXAST_LEARN2. |
c2d936a4 BP |
5012 | * |
5013 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
5014 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
5015 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
5016 | * flow's match criteria and actions are built by applying each of the series | |
5017 | * of flow_mod_spec elements included as part of the action. | |
5018 | * | |
5019 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
5020 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
5021 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
5022 | * bits from a source to a destination. In this case, the header contains | |
5023 | * multiple fields: | |
5024 | * | |
5025 | * 15 14 13 12 11 10 0 | |
5026 | * +------+---+------+---------------------------------+ | |
5027 | * | 0 |src| dst | n_bits | | |
5028 | * +------+---+------+---------------------------------+ | |
5029 | * | |
5030 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
5031 | * following table summarizes the meaning of each possible combination. | |
5032 | * Details follow the table: | |
5033 | * | |
5034 | * src dst meaning | |
5035 | * --- --- ---------------------------------------------------------- | |
5036 | * 0 0 Add match criteria based on value in a field. | |
5037 | * 1 0 Add match criteria based on an immediate value. | |
5038 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
5039 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
5040 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
5041 | * All other combinations are undefined and not allowed. | |
5042 | * | |
5043 | * The flow_mod_spec header is followed by a source specification and a | |
5044 | * destination specification. The format and meaning of the source | |
5045 | * specification depends on 'src': | |
5046 | * | |
5047 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
5048 | * which this action is attached. (This should be a wildcarded field. If | |
5049 | * its value is fully specified then the source bits being copied have | |
5050 | * constant values.) | |
5051 | * | |
5052 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
5053 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
5054 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
5055 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
5056 | * field in NXAST_REG_MOVE. | |
5057 | * | |
5058 | * - If 'src' is 1, the source bits are a constant value. The source | |
5059 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
5060 | * number in network order, the source bits are the 'n_bits' | |
5061 | * least-significant bits. The switch will report an error if other bits | |
5062 | * in the constant are nonzero. | |
5063 | * | |
5064 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
5065 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
5066 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
5067 | * meaning of the flow_mod_spec depends on 'dst': | |
5068 | * | |
5069 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
5070 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
5071 | * packet equal the source bits. 'field' may be any nxm_header with | |
5072 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
5073 | * | |
5074 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
5075 | * prerequisites for matching fields specified later, by copying constant | |
5076 | * values into prerequisite fields. | |
5077 | * | |
5078 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
5079 | * restrictions. | |
5080 | * | |
5081 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
5082 | * the new flow. The new flow copies the source bits into | |
5083 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
5084 | * flow_mod_specs. | |
5085 | * | |
5086 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
5087 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
5088 | * | |
5089 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
5090 | * empty. It has the following meaning: | |
5091 | * | |
5092 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
5093 | * The new flow outputs to the OpenFlow port specified by the source field. | |
5094 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
5095 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
5096 | * may not be used. | |
5097 | * | |
5098 | * Resource Management | |
5099 | * ------------------- | |
5100 | * | |
5101 | * A switch has a finite amount of flow table space available for learning. | |
5102 | * When this space is exhausted, no new learning table entries will be learned | |
5103 | * until some existing flow table entries expire. The controller should be | |
5104 | * prepared to handle this by flooding (which can be implemented as a | |
5105 | * low-priority flow). | |
5106 | * | |
5107 | * If a learned flow matches a single TCP stream with a relatively long | |
5108 | * timeout, one may make the best of resource constraints by setting | |
5109 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
5110 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
5111 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
5112 | * the learned flow. | |
5113 | * | |
5114 | * Examples | |
5115 | * -------- | |
5116 | * | |
5117 | * The following examples give a prose description of the flow_mod_specs along | |
5118 | * with informal notation for how those would be represented and a hex dump of | |
5119 | * the bytes that would be required. | |
5120 | * | |
5121 | * These examples could work with various nx_action_learn parameters. Typical | |
5122 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
5123 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
5124 | * | |
5125 | * 1. Learn input port based on the source MAC, with lookup into | |
5126 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
5127 | * | |
5128 | * Match on in_port=99: | |
5129 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
5130 | * ovs_be16(99), 00 63 | |
5131 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
5132 | * | |
5133 | * Match Ethernet destination on Ethernet source from packet: | |
5134 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
5135 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
5136 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
5137 | * | |
5138 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
5139 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
5140 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
5141 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
5142 | * | |
5143 | * Given a packet that arrived on port A with Ethernet source address B, | |
5144 | * this would set up the flow "in_port=99, dl_dst=B, | |
5145 | * actions=load:A->NXM_NX_REG1[16..31]". | |
5146 | * | |
5147 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
5148 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
5149 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
5150 | * | |
5151 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
5152 | * into NXM_NX_REG1[16:31]: | |
5153 | * | |
5154 | * Match on same VLAN ID as packet: | |
5155 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
5156 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
5157 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
5158 | * | |
5159 | * Match Ethernet destination on Ethernet source from packet: | |
5160 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
5161 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
5162 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
5163 | * | |
5164 | * Output to the packet's input port: | |
5165 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
5166 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
5167 | * | |
5168 | * Given a packet that arrived on port A with Ethernet source address B in | |
5169 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
5170 | * actions=output:A". | |
5171 | * | |
5172 | * In syntax accepted by ovs-ofctl, this action is: | |
5173 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
5174 | * output:NXM_OF_IN_PORT[]) | |
5175 | * | |
5176 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
5177 | * 10-second MAC expiration time to make it easier to see what's going on | |
5178 | * | |
5179 | * ovs-vsctl del-controller br0 | |
5180 | * ovs-ofctl del-flows br0 | |
5181 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
5182 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
5183 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
5184 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
5185 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
5186 | * | |
5187 | * You can then dump the MAC learning table with: | |
5188 | * | |
5189 | * ovs-ofctl dump-flows br0 table=1 | |
5190 | * | |
5191 | * Usage Advice | |
5192 | * ------------ | |
5193 | * | |
5194 | * For best performance, segregate learned flows into a table that is not used | |
5195 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
5196 | * (a flow with no match criteria). If different learning actions specify | |
5197 | * different match criteria, use different tables for the learned flows. | |
5198 | * | |
5199 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
5200 | * These timeouts apply to the flow that is added, which means that a flow with | |
5201 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
5202 | * address. This is not usually the intent in MAC learning; instead, we want | |
5203 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
5204 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
5205 | * |
5206 | * | |
5207 | * Visibility of Changes | |
5208 | * --------------------- | |
5209 | * | |
5210 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
5211 | * flow translation are visible to flow table lookups made later in the flow | |
5212 | * translation. This means that, in the example above, a MAC learned by the | |
5213 | * learn action in table 0 would be found in table 1 (if the packet being | |
5214 | * processed had the same source and destination MAC address). | |
5215 | * | |
5216 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
5217 | * modify a flow) by a "learn" action are visible only for later flow | |
5218 | * translations, not for later lookups within the same flow translation. In | |
5219 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
5220 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
5221 | * after the processing of the learn action, meaning that if this MAC had not | |
5222 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
5223 | struct nx_action_learn { |
5224 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5225 | ovs_be16 len; /* At least 24. */ | |
5226 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5227 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
5228 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
5229 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
5230 | ovs_be16 priority; /* Priority level of flow entry. */ | |
5231 | ovs_be64 cookie; /* Cookie for new flow. */ | |
5232 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
5233 | uint8_t table_id; /* Table to insert flow entry. */ | |
5234 | uint8_t pad; /* Must be zero. */ | |
5235 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
5236 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
5237 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
5238 | * until the end of the action is reached. */ | |
5239 | }; | |
5240 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
5241 | ||
4c71600d DDP |
5242 | struct nx_action_learn2 { |
5243 | struct nx_action_learn up; /* The wire format includes nx_action_learn. */ | |
1746822c JS |
5244 | ovs_be32 limit; /* Maximum number of learned flows. |
5245 | * 0 indicates unlimited. */ | |
4c71600d DDP |
5246 | |
5247 | /* Where to store the result. */ | |
5248 | ovs_be16 result_dst_ofs; /* Starting bit offset in destination. */ | |
5249 | ||
5250 | ovs_be16 pad2; /* Must be zero. */ | |
5251 | /* Followed by: | |
5252 | * - OXM/NXM header for destination field (4 or 8 bytes), | |
5253 | * if NX_LEARN_F_WRITE_RESULT is set in 'flags' | |
5254 | * - a sequence of flow_mod_spec elements, as described above, | |
5255 | * until the end of the action is reached. */ | |
5256 | }; | |
5257 | OFP_ASSERT(sizeof(struct nx_action_learn2) == 40); | |
5258 | ||
c2d936a4 BP |
5259 | static ovs_be16 |
5260 | get_be16(const void **pp) | |
5261 | { | |
5262 | const ovs_be16 *p = *pp; | |
5263 | ovs_be16 value = *p; | |
5264 | *pp = p + 1; | |
5265 | return value; | |
5266 | } | |
5267 | ||
5268 | static ovs_be32 | |
5269 | get_be32(const void **pp) | |
5270 | { | |
5271 | const ovs_be32 *p = *pp; | |
5272 | ovs_be32 value = get_unaligned_be32(p); | |
5273 | *pp = p + 1; | |
5274 | return value; | |
5275 | } | |
5276 | ||
04f48a68 YHW |
5277 | static enum ofperr |
5278 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf, | |
5c7c16d8 | 5279 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
c2d936a4 | 5280 | { |
5c7c16d8 YHW |
5281 | enum ofperr error; |
5282 | ||
5283 | error = mf_vl_mff_mf_from_nxm_header(ntohl(get_be32(p)), vl_mff_map, | |
5284 | &sf->field, tlv_bitmap); | |
c2d936a4 BP |
5285 | sf->ofs = ntohs(get_be16(p)); |
5286 | sf->n_bits = n_bits; | |
5c7c16d8 | 5287 | return error; |
c2d936a4 BP |
5288 | } |
5289 | ||
5290 | static unsigned int | |
5291 | learn_min_len(uint16_t header) | |
5292 | { | |
5293 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
5294 | int src_type = header & NX_LEARN_SRC_MASK; | |
5295 | int dst_type = header & NX_LEARN_DST_MASK; | |
5296 | unsigned int min_len; | |
5297 | ||
5298 | min_len = 0; | |
5299 | if (src_type == NX_LEARN_SRC_FIELD) { | |
5300 | min_len += sizeof(ovs_be32); /* src_field */ | |
5301 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
5302 | } else { | |
bc759a2c | 5303 | min_len += 2 * DIV_ROUND_UP(n_bits, 16); |
c2d936a4 BP |
5304 | } |
5305 | if (dst_type == NX_LEARN_DST_MATCH || | |
5306 | dst_type == NX_LEARN_DST_LOAD) { | |
5307 | min_len += sizeof(ovs_be32); /* dst_field */ | |
5308 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
5309 | } | |
5310 | return min_len; | |
5311 | } | |
5312 | ||
c2d936a4 | 5313 | static enum ofperr |
2ce5f311 | 5314 | decode_LEARN_common(const struct nx_action_learn *nal, |
a9fedc78 | 5315 | enum ofp_raw_action_type raw, |
2ce5f311 | 5316 | struct ofpact_learn *learn) |
c2d936a4 | 5317 | { |
c2d936a4 BP |
5318 | if (nal->pad) { |
5319 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5320 | } | |
5321 | ||
a9fedc78 | 5322 | learn->ofpact.raw = raw; |
c2d936a4 BP |
5323 | learn->idle_timeout = ntohs(nal->idle_timeout); |
5324 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
5325 | learn->priority = ntohs(nal->priority); | |
5326 | learn->cookie = nal->cookie; | |
5327 | learn->table_id = nal->table_id; | |
5328 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
5329 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
c2d936a4 | 5330 | learn->flags = ntohs(nal->flags); |
c2d936a4 BP |
5331 | |
5332 | if (learn->table_id == 0xff) { | |
5333 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5334 | } | |
5335 | ||
2ce5f311 DDP |
5336 | return 0; |
5337 | } | |
5338 | ||
5339 | static enum ofperr | |
5340 | decode_LEARN_specs(const void *p, const void *end, | |
5341 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, | |
5342 | struct ofpbuf *ofpacts) | |
5343 | { | |
5344 | struct ofpact_learn *learn = ofpacts->header; | |
5345 | ||
5346 | while (p != end) { | |
c2d936a4 BP |
5347 | struct ofpact_learn_spec *spec; |
5348 | uint16_t header = ntohs(get_be16(&p)); | |
5349 | ||
5350 | if (!header) { | |
5351 | break; | |
5352 | } | |
5353 | ||
5354 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 5355 | learn = ofpacts->header; |
c2d936a4 BP |
5356 | |
5357 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
5358 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
5359 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
5360 | ||
5361 | /* Check for valid src and dst type combination. */ | |
5362 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5363 | spec->dst_type == NX_LEARN_DST_LOAD || | |
5364 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
5365 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
5366 | /* OK. */ | |
5367 | } else { | |
5368 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5369 | } | |
5370 | ||
5371 | /* Check that the arguments don't overrun the end of the action. */ | |
5372 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
5373 | return OFPERR_OFPBAC_BAD_LEN; | |
5374 | } | |
5375 | ||
5376 | /* Get the source. */ | |
dfe191d5 JR |
5377 | const uint8_t *imm = NULL; |
5378 | unsigned int imm_bytes = 0; | |
04f48a68 | 5379 | enum ofperr error; |
c2d936a4 | 5380 | if (spec->src_type == NX_LEARN_SRC_FIELD) { |
5c7c16d8 YHW |
5381 | error = get_subfield(spec->n_bits, &p, &spec->src, vl_mff_map, |
5382 | tlv_bitmap); | |
04f48a68 YHW |
5383 | if (error) { |
5384 | return error; | |
5385 | } | |
c2d936a4 BP |
5386 | } else { |
5387 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
c2d936a4 | 5388 | p = (const uint8_t *) p + p_bytes; |
dfe191d5 JR |
5389 | |
5390 | imm_bytes = DIV_ROUND_UP(spec->n_bits, 8); | |
5391 | imm = (const uint8_t *) p - imm_bytes; | |
c2d936a4 BP |
5392 | } |
5393 | ||
5394 | /* Get the destination. */ | |
5395 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5396 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
5c7c16d8 YHW |
5397 | error = get_subfield(spec->n_bits, &p, &spec->dst, vl_mff_map, |
5398 | tlv_bitmap); | |
04f48a68 YHW |
5399 | if (error) { |
5400 | return error; | |
5401 | } | |
c2d936a4 | 5402 | } |
dfe191d5 JR |
5403 | |
5404 | if (imm) { | |
5405 | uint8_t *src_imm = ofpbuf_put_zeros(ofpacts, | |
5406 | OFPACT_ALIGN(imm_bytes)); | |
5407 | memcpy(src_imm, imm, imm_bytes); | |
5408 | ||
5409 | learn = ofpacts->header; | |
5410 | } | |
c2d936a4 | 5411 | } |
ce058104 | 5412 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
5413 | |
5414 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
5415 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5416 | } | |
5417 | ||
5418 | return 0; | |
5419 | } | |
5420 | ||
2ce5f311 DDP |
5421 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
5422 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
5423 | static enum ofperr | |
5424 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
5425 | enum ofp_version ofp_version OVS_UNUSED, | |
5426 | const struct vl_mff_map *vl_mff_map, | |
5427 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
5428 | { | |
5429 | struct ofpact_learn *learn; | |
5430 | enum ofperr error; | |
5431 | ||
5432 | learn = ofpact_put_LEARN(ofpacts); | |
5433 | ||
a9fedc78 | 5434 | error = decode_LEARN_common(nal, NXAST_RAW_LEARN, learn); |
2ce5f311 DDP |
5435 | if (error) { |
5436 | return error; | |
5437 | } | |
5438 | ||
5439 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
5440 | NX_LEARN_F_DELETE_LEARNED)) { | |
5441 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5442 | } | |
5443 | ||
5444 | return decode_LEARN_specs(nal + 1, (char *) nal + ntohs(nal->len), | |
5445 | vl_mff_map, tlv_bitmap, ofpacts); | |
5446 | } | |
5447 | ||
4c71600d DDP |
5448 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
5449 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
5450 | static enum ofperr | |
5451 | decode_NXAST_RAW_LEARN2(const struct nx_action_learn2 *nal, | |
5452 | enum ofp_version ofp_version OVS_UNUSED, | |
5453 | const struct vl_mff_map *vl_mff_map, | |
5454 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
5455 | { | |
5456 | struct ofpbuf b = ofpbuf_const_initializer(nal, ntohs(nal->up.len)); | |
5457 | struct ofpact_learn *learn; | |
5458 | enum ofperr error; | |
5459 | ||
5460 | if (nal->pad2) { | |
5461 | return OFPERR_NXBAC_MUST_BE_ZERO; | |
5462 | } | |
5463 | ||
5464 | learn = ofpact_put_LEARN(ofpacts); | |
a9fedc78 | 5465 | error = decode_LEARN_common(&nal->up, NXAST_RAW_LEARN2, learn); |
4c71600d DDP |
5466 | if (error) { |
5467 | return error; | |
5468 | } | |
5469 | ||
5470 | learn->limit = ntohl(nal->limit); | |
5471 | ||
5472 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
5473 | NX_LEARN_F_DELETE_LEARNED | | |
5474 | NX_LEARN_F_WRITE_RESULT)) { | |
5475 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5476 | } | |
5477 | ||
5478 | ofpbuf_pull(&b, sizeof *nal); | |
5479 | ||
5480 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
5481 | error = nx_pull_header(&b, vl_mff_map, &learn->result_dst.field, NULL); | |
5482 | if (error) { | |
5483 | return error; | |
5484 | } | |
5485 | if (!learn->result_dst.field->writable) { | |
5486 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
5487 | } | |
5488 | learn->result_dst.ofs = ntohs(nal->result_dst_ofs); | |
5489 | learn->result_dst.n_bits = 1; | |
5490 | } else if (nal->result_dst_ofs) { | |
5491 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5492 | } | |
5493 | ||
5494 | return decode_LEARN_specs(b.data, (char *) nal + ntohs(nal->up.len), | |
5495 | vl_mff_map, tlv_bitmap, ofpacts); | |
5496 | } | |
5497 | ||
c2d936a4 BP |
5498 | static void |
5499 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
5500 | { | |
5501 | ofpbuf_put(b, &x, sizeof x); | |
5502 | } | |
5503 | ||
5504 | static void | |
5505 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
5506 | { | |
5507 | ofpbuf_put(b, &x, sizeof x); | |
5508 | } | |
5509 | ||
5510 | static void | |
5511 | put_u16(struct ofpbuf *b, uint16_t x) | |
5512 | { | |
5513 | put_be16(b, htons(x)); | |
5514 | } | |
5515 | ||
5516 | static void | |
5517 | put_u32(struct ofpbuf *b, uint32_t x) | |
5518 | { | |
5519 | put_be32(b, htonl(x)); | |
5520 | } | |
5521 | ||
5522 | static void | |
5523 | encode_LEARN(const struct ofpact_learn *learn, | |
5524 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5525 | { | |
5526 | const struct ofpact_learn_spec *spec; | |
5527 | struct nx_action_learn *nal; | |
5528 | size_t start_ofs; | |
5529 | ||
6fd6ed71 | 5530 | start_ofs = out->size; |
4c71600d DDP |
5531 | |
5532 | if (learn->ofpact.raw == NXAST_RAW_LEARN2 | |
5533 | || learn->limit != 0 | |
5534 | || learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
5535 | struct nx_action_learn2 *nal2; | |
5536 | ||
5537 | nal2 = put_NXAST_LEARN2(out); | |
5538 | nal2->limit = htonl(learn->limit); | |
5539 | nal2->result_dst_ofs = htons(learn->result_dst.ofs); | |
5540 | nal = &nal2->up; | |
5541 | } else { | |
5542 | nal = put_NXAST_LEARN(out); | |
5543 | } | |
c2d936a4 BP |
5544 | nal->idle_timeout = htons(learn->idle_timeout); |
5545 | nal->hard_timeout = htons(learn->hard_timeout); | |
5546 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
5547 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
5548 | nal->priority = htons(learn->priority); | |
5549 | nal->cookie = learn->cookie; | |
5550 | nal->flags = htons(learn->flags); | |
5551 | nal->table_id = learn->table_id; | |
5552 | ||
4c71600d DDP |
5553 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { |
5554 | nx_put_header(out, learn->result_dst.field->id, 0, false); | |
5555 | } | |
5556 | ||
c65a31e2 | 5557 | OFPACT_LEARN_SPEC_FOR_EACH (spec, learn) { |
c2d936a4 BP |
5558 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); |
5559 | ||
5560 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
04f48a68 | 5561 | put_u32(out, nxm_header_from_mff(spec->src.field)); |
c2d936a4 BP |
5562 | put_u16(out, spec->src.ofs); |
5563 | } else { | |
5564 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
5565 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
507a9a16 | 5566 | unsigned int n_bytes = DIV_ROUND_UP(spec->n_bits, 8); |
dfe191d5 | 5567 | |
507a9a16 JR |
5568 | memcpy(bits + n_dst_bytes - n_bytes, ofpact_learn_spec_imm(spec), |
5569 | n_bytes); | |
c2d936a4 BP |
5570 | } |
5571 | ||
5572 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5573 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
04f48a68 | 5574 | put_u32(out, nxm_header_from_mff(spec->dst.field)); |
c2d936a4 BP |
5575 | put_u16(out, spec->dst.ofs); |
5576 | } | |
5577 | } | |
5578 | ||
178742f9 | 5579 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5580 | } |
5581 | ||
cab50449 | 5582 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5583 | parse_LEARN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5584 | { |
4bc938cc | 5585 | return learn_parse(arg, pp->port_map, pp->table_map, pp->ofpacts); |
c2d936a4 BP |
5586 | } |
5587 | ||
5588 | static void | |
50f96b10 | 5589 | format_LEARN(const struct ofpact_learn *a, |
efefbcae | 5590 | const struct ofpact_format_params *fp) |
c2d936a4 | 5591 | { |
4bc938cc | 5592 | learn_format(a, fp->port_map, fp->table_map, fp->s); |
c2d936a4 | 5593 | } |
ae6f7530 BP |
5594 | |
5595 | static enum ofperr | |
5596 | check_LEARN(const struct ofpact_learn *a, | |
5597 | const struct ofpact_check_params *cp) | |
5598 | { | |
5599 | return learn_check(a, cp->match); | |
5600 | } | |
c2d936a4 | 5601 | \f |
18080541 BP |
5602 | /* Action structure for NXAST_CONJUNCTION. */ |
5603 | struct nx_action_conjunction { | |
5604 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5605 | ovs_be16 len; /* At least 16. */ | |
5606 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5607 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
5608 | uint8_t clause; | |
5609 | uint8_t n_clauses; | |
5610 | ovs_be32 id; | |
5611 | }; | |
5612 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
5613 | ||
5614 | static void | |
5615 | add_conjunction(struct ofpbuf *out, | |
5616 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
5617 | { | |
5618 | struct ofpact_conjunction *oc; | |
5619 | ||
5620 | oc = ofpact_put_CONJUNCTION(out); | |
5621 | oc->id = id; | |
5622 | oc->clause = clause; | |
5623 | oc->n_clauses = n_clauses; | |
5624 | } | |
5625 | ||
5626 | static enum ofperr | |
5627 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 5628 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
5629 | struct ofpbuf *out) |
5630 | { | |
5631 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
5632 | || nac->clause >= nac->n_clauses) { | |
5633 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
5634 | } else { | |
5635 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
5636 | return 0; | |
5637 | } | |
5638 | } | |
5639 | ||
5640 | static void | |
5641 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
5642 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5643 | { | |
5644 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
5645 | nac->clause = oc->clause; | |
5646 | nac->n_clauses = oc->n_clauses; | |
5647 | nac->id = htonl(oc->id); | |
5648 | } | |
5649 | ||
5650 | static void | |
50f96b10 | 5651 | format_CONJUNCTION(const struct ofpact_conjunction *oc, |
efefbcae | 5652 | const struct ofpact_format_params *fp) |
18080541 | 5653 | { |
efefbcae | 5654 | ds_put_format(fp->s, "%sconjunction(%s%"PRIu32",%d/%"PRIu8"%s)%s", |
b1c5bf1f QM |
5655 | colors.paren, colors.end, |
5656 | oc->id, oc->clause + 1, oc->n_clauses, | |
5657 | colors.paren, colors.end); | |
18080541 BP |
5658 | } |
5659 | ||
5660 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5661 | parse_CONJUNCTION(const char *arg, const struct ofpact_parse_params *pp) |
18080541 BP |
5662 | { |
5663 | uint8_t n_clauses; | |
5664 | uint8_t clause; | |
5665 | uint32_t id; | |
5666 | int n; | |
5667 | ||
5668 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
5669 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
5670 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
5671 | } | |
5672 | ||
5673 | if (n_clauses < 2) { | |
5674 | return xstrdup("conjunction must have at least 2 clauses"); | |
5675 | } else if (n_clauses > 64) { | |
5676 | return xstrdup("conjunction must have at most 64 clauses"); | |
5677 | } else if (clause < 1) { | |
5678 | return xstrdup("clause index must be positive"); | |
5679 | } else if (clause > n_clauses) { | |
5680 | return xstrdup("clause index must be less than or equal to " | |
5681 | "number of clauses"); | |
5682 | } | |
5683 | ||
efefbcae | 5684 | add_conjunction(pp->ofpacts, id, clause - 1, n_clauses); |
18080541 BP |
5685 | return NULL; |
5686 | } | |
ae6f7530 BP |
5687 | |
5688 | static enum ofperr | |
5689 | check_CONJUNCTION(const struct ofpact_conjunction *a OVS_UNUSED, | |
5690 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5691 | { | |
5692 | return 0; | |
5693 | } | |
18080541 | 5694 | \f |
c2d936a4 BP |
5695 | /* Action structure for NXAST_MULTIPATH. |
5696 | * | |
5697 | * This action performs the following steps in sequence: | |
5698 | * | |
5699 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
5700 | * Refer to the definition of "enum nx_mp_fields" for details. | |
5701 | * | |
5702 | * The 'basis' value is used as a universal hash parameter, that is, | |
5703 | * different values of 'basis' yield different hash functions. The | |
5704 | * particular universal hash function used is implementation-defined. | |
5705 | * | |
5706 | * The hashed fields' values are drawn from the current state of the | |
5707 | * flow, including all modifications that have been made by actions up to | |
5708 | * this point. | |
5709 | * | |
5710 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
5711 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
5712 | * for details. | |
5713 | * | |
5714 | * The output of the algorithm is 'link', an unsigned integer less than | |
5715 | * or equal to 'max_link'. | |
5716 | * | |
5717 | * Some algorithms use 'arg' as an additional argument. | |
5718 | * | |
5719 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
5720 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
5721 | * action. | |
5722 | * | |
5723 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
5724 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
5725 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
5726 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
5727 | */ | |
5728 | struct nx_action_multipath { | |
5729 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5730 | ovs_be16 len; /* Length is 32. */ | |
5731 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5732 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
5733 | ||
5734 | /* What fields to hash and how. */ | |
5735 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
5736 | ovs_be16 basis; /* Universal hash parameter. */ | |
5737 | ovs_be16 pad0; | |
5738 | ||
5739 | /* Multipath link choice algorithm to apply to hash value. */ | |
5740 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
5741 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
5742 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
5743 | ovs_be16 pad1; | |
5744 | ||
5745 | /* Where to store the result. */ | |
5746 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
5747 | ovs_be32 dst; /* Destination. */ | |
5748 | }; | |
5749 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
5750 | ||
5751 | static enum ofperr | |
5752 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 5753 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 5754 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 5755 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 BP |
5756 | { |
5757 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
5758 | size_t min_n_bits = log_2_ceil(n_links); | |
5759 | struct ofpact_multipath *mp; | |
5c7c16d8 | 5760 | enum ofperr error; |
c2d936a4 BP |
5761 | |
5762 | mp = ofpact_put_MULTIPATH(out); | |
5763 | mp->fields = ntohs(nam->fields); | |
5764 | mp->basis = ntohs(nam->basis); | |
5765 | mp->algorithm = ntohs(nam->algorithm); | |
5766 | mp->max_link = ntohs(nam->max_link); | |
5767 | mp->arg = ntohl(nam->arg); | |
c2d936a4 BP |
5768 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); |
5769 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
5c7c16d8 YHW |
5770 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nam->dst), vl_mff_map, |
5771 | &mp->dst.field, tlv_bitmap); | |
5772 | if (error) { | |
5773 | return error; | |
04f48a68 YHW |
5774 | } |
5775 | ||
c2d936a4 BP |
5776 | if (!flow_hash_fields_valid(mp->fields)) { |
5777 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
5778 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5779 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
5780 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
5781 | && mp->algorithm != NX_MP_ALG_HRW | |
5782 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
5783 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
5784 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5785 | } else if (mp->dst.n_bits < min_n_bits) { | |
5786 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
5787 | "%"PRIu32" links", min_n_bits, n_links); | |
5788 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5789 | } | |
5790 | ||
5791 | return multipath_check(mp, NULL); | |
5792 | } | |
5793 | ||
5794 | static void | |
5795 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
5796 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5797 | { | |
5798 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
5799 | ||
5800 | nam->fields = htons(mp->fields); | |
5801 | nam->basis = htons(mp->basis); | |
5802 | nam->algorithm = htons(mp->algorithm); | |
5803 | nam->max_link = htons(mp->max_link); | |
5804 | nam->arg = htonl(mp->arg); | |
5805 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
04f48a68 | 5806 | nam->dst = htonl(nxm_header_from_mff(mp->dst.field)); |
c2d936a4 BP |
5807 | } |
5808 | ||
cab50449 | 5809 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5810 | parse_MULTIPATH(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5811 | { |
efefbcae | 5812 | return multipath_parse(ofpact_put_MULTIPATH(pp->ofpacts), arg); |
c2d936a4 BP |
5813 | } |
5814 | ||
5815 | static void | |
50f96b10 | 5816 | format_MULTIPATH(const struct ofpact_multipath *a, |
efefbcae | 5817 | const struct ofpact_format_params *fp) |
c2d936a4 | 5818 | { |
efefbcae | 5819 | multipath_format(a, fp->s); |
c2d936a4 | 5820 | } |
ae6f7530 BP |
5821 | |
5822 | static enum ofperr | |
5823 | check_MULTIPATH(const struct ofpact_multipath *a, | |
5824 | const struct ofpact_check_params *cp) | |
5825 | { | |
5826 | return multipath_check(a, cp->match); | |
5827 | } | |
c2d936a4 BP |
5828 | \f |
5829 | /* Action structure for NXAST_NOTE. | |
5830 | * | |
5831 | * This action has no effect. It is variable length. The switch does not | |
5832 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
5833 | * can use this action to attach arbitrary metadata to a flow. | |
5834 | * | |
5835 | * This action might go away in the future. | |
5836 | */ | |
5837 | struct nx_action_note { | |
5838 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5839 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
5840 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5841 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
5842 | uint8_t note[6]; /* Start of user-defined data. */ | |
5843 | /* Possibly followed by additional user-defined data. */ | |
5844 | }; | |
5845 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
5846 | ||
5847 | static enum ofperr | |
f3cd3ac7 JS |
5848 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
5849 | enum ofp_version ofp_version OVS_UNUSED, | |
5850 | struct ofpbuf *out) | |
c2d936a4 BP |
5851 | { |
5852 | struct ofpact_note *note; | |
5853 | unsigned int length; | |
5854 | ||
5855 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 5856 | note = ofpact_put_NOTE(out); |
c2d936a4 | 5857 | note->length = length; |
2bd318de | 5858 | ofpbuf_put(out, nan->note, length); |
ace39a6f | 5859 | note = out->header; |
ce058104 | 5860 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
5861 | |
5862 | return 0; | |
5863 | } | |
5864 | ||
5865 | static void | |
5866 | encode_NOTE(const struct ofpact_note *note, | |
5867 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5868 | { | |
6fd6ed71 | 5869 | size_t start_ofs = out->size; |
c2d936a4 | 5870 | struct nx_action_note *nan; |
c2d936a4 BP |
5871 | |
5872 | put_NXAST_NOTE(out); | |
6fd6ed71 | 5873 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
5874 | |
5875 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 5876 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5877 | } |
5878 | ||
cab50449 | 5879 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
5880 | parse_NOTE(const char *arg, const struct ofpact_parse_params *pp) |
5881 | { | |
5882 | size_t start_ofs = pp->ofpacts->size; | |
5883 | ofpact_put_NOTE(pp->ofpacts); | |
5884 | arg = ofpbuf_put_hex(pp->ofpacts, arg, NULL); | |
27aa8793 BP |
5885 | if (arg[0]) { |
5886 | return xstrdup("bad hex digit in `note' argument"); | |
5887 | } | |
efefbcae | 5888 | struct ofpact_note *note = ofpbuf_at_assert(pp->ofpacts, start_ofs, |
27aa8793 | 5889 | sizeof *note); |
efefbcae | 5890 | note->length = pp->ofpacts->size - (start_ofs + sizeof *note); |
8e738337 TA |
5891 | |
5892 | if (ofpbuf_oversized(pp->ofpacts)) { | |
5893 | return xasprintf("input too big"); | |
5894 | } | |
5895 | ||
efefbcae | 5896 | ofpact_finish_NOTE(pp->ofpacts, ¬e); |
c2d936a4 BP |
5897 | return NULL; |
5898 | } | |
5899 | ||
5900 | static void | |
50f96b10 | 5901 | format_NOTE(const struct ofpact_note *a, |
efefbcae | 5902 | const struct ofpact_format_params *fp) |
c2d936a4 | 5903 | { |
efefbcae BP |
5904 | ds_put_format(fp->s, "%snote:%s", colors.param, colors.end); |
5905 | format_hex_arg(fp->s, a->data, a->length); | |
c2d936a4 | 5906 | } |
ae6f7530 BP |
5907 | |
5908 | static enum ofperr | |
5909 | check_NOTE(const struct ofpact_note *a OVS_UNUSED, | |
5910 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5911 | { | |
5912 | return 0; | |
5913 | } | |
c2d936a4 BP |
5914 | \f |
5915 | /* Exit action. */ | |
5916 | ||
5917 | static enum ofperr | |
5918 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
5919 | { | |
5920 | ofpact_put_EXIT(out); | |
5921 | return 0; | |
5922 | } | |
5923 | ||
5924 | static void | |
5925 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
5926 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5927 | { | |
5928 | put_NXAST_EXIT(out); | |
5929 | } | |
5930 | ||
cab50449 | 5931 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5932 | parse_EXIT(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 5933 | { |
efefbcae | 5934 | ofpact_put_EXIT(pp->ofpacts); |
c2d936a4 BP |
5935 | return NULL; |
5936 | } | |
5937 | ||
5938 | static void | |
50f96b10 | 5939 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 5940 | const struct ofpact_format_params *fp) |
c2d936a4 | 5941 | { |
efefbcae | 5942 | ds_put_format(fp->s, "%sexit%s", colors.special, colors.end); |
c2d936a4 | 5943 | } |
ae6f7530 BP |
5944 | |
5945 | static enum ofperr | |
5946 | check_EXIT(const struct ofpact_null *a OVS_UNUSED, | |
5947 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5948 | { | |
5949 | return 0; | |
5950 | } | |
c2d936a4 | 5951 | \f |
e672ff9b JR |
5952 | /* Unroll xlate action. */ |
5953 | ||
5954 | static void | |
5955 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
5956 | enum ofp_version ofp_version OVS_UNUSED, | |
5957 | struct ofpbuf *out OVS_UNUSED) | |
5958 | { | |
5959 | OVS_NOT_REACHED(); | |
5960 | } | |
5961 | ||
5962 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 5963 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, |
efefbcae | 5964 | const struct ofpact_parse_params *pp OVS_UNUSED) |
e672ff9b | 5965 | { |
1d478a80 YS |
5966 | return xasprintf("UNROLL is an internal action " |
5967 | "that shouldn't be used via OpenFlow"); | |
e672ff9b JR |
5968 | } |
5969 | ||
5970 | static void | |
50f96b10 | 5971 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, |
efefbcae | 5972 | const struct ofpact_format_params *fp) |
e672ff9b | 5973 | { |
4bc938cc | 5974 | ds_put_format(fp->s, "%sunroll_xlate(%s%stable=%s", |
b1c5bf1f | 5975 | colors.paren, colors.end, |
4bc938cc BP |
5976 | colors.special, colors.end); |
5977 | ofputil_format_table(a->rule_table_id, fp->table_map, fp->s); | |
5978 | ds_put_format(fp->s, ", %scookie=%s%"PRIu64"%s)%s", | |
b1c5bf1f QM |
5979 | colors.param, colors.end, ntohll(a->rule_cookie), |
5980 | colors.paren, colors.end); | |
e672ff9b | 5981 | } |
ae6f7530 BP |
5982 | |
5983 | static enum ofperr | |
5984 | check_UNROLL_XLATE(const struct ofpact_unroll_xlate *a OVS_UNUSED, | |
5985 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5986 | { | |
5987 | /* UNROLL is an internal action that should never be seen via OpenFlow. */ | |
5988 | return OFPERR_OFPBAC_BAD_TYPE; | |
5989 | } | |
e672ff9b | 5990 | \f |
7ae62a67 WT |
5991 | /* The NXAST_CLONE action is "struct ext_action_header", followed by zero or |
5992 | * more embedded OpenFlow actions. */ | |
5993 | ||
5994 | static enum ofperr | |
5995 | decode_NXAST_RAW_CLONE(const struct ext_action_header *eah, | |
04f48a68 YHW |
5996 | enum ofp_version ofp_version, |
5997 | const struct vl_mff_map *vl_mff_map, | |
5c7c16d8 | 5998 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7ae62a67 WT |
5999 | { |
6000 | int error; | |
6001 | struct ofpbuf openflow; | |
6002 | const size_t clone_offset = ofpacts_pull(out); | |
6003 | struct ofpact_nest *clone = ofpact_put_CLONE(out); | |
6004 | ||
6005 | /* decode action list */ | |
6006 | ofpbuf_pull(out, sizeof(*clone)); | |
6007 | openflow = ofpbuf_const_initializer( | |
6008 | eah + 1, ntohs(eah->len) - sizeof *eah); | |
6009 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, | |
6010 | ofp_version, | |
6011 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 | 6012 | out, 0, vl_mff_map, tlv_bitmap); |
3ee9b38d BP |
6013 | if (error) { |
6014 | return error; | |
6015 | } | |
7ae62a67 WT |
6016 | clone = ofpbuf_push_uninit(out, sizeof *clone); |
6017 | out->header = &clone->ofpact; | |
6018 | ofpact_finish_CLONE(out, &clone); | |
6019 | ofpbuf_push_uninit(out, clone_offset); | |
6020 | return error; | |
6021 | } | |
6022 | ||
6023 | static void | |
6024 | encode_CLONE(const struct ofpact_nest *clone, | |
6025 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6026 | { | |
6027 | size_t len; | |
6028 | const size_t ofs = out->size; | |
6029 | struct ext_action_header *eah; | |
6030 | ||
6f9648e4 | 6031 | put_NXAST_CLONE(out); |
7ae62a67 WT |
6032 | len = ofpacts_put_openflow_actions(clone->actions, |
6033 | ofpact_nest_get_action_len(clone), | |
6034 | out, ofp_version); | |
6035 | len += sizeof *eah; | |
6036 | eah = ofpbuf_at(out, ofs, sizeof *eah); | |
6037 | eah->len = htons(len); | |
6038 | } | |
6039 | ||
6040 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6041 | parse_CLONE(char *arg, const struct ofpact_parse_params *pp) |
7ae62a67 | 6042 | { |
efefbcae BP |
6043 | const size_t clone_offset = ofpacts_pull(pp->ofpacts); |
6044 | struct ofpact_nest *clone = ofpact_put_CLONE(pp->ofpacts); | |
7ae62a67 WT |
6045 | char *error; |
6046 | ||
efefbcae | 6047 | ofpbuf_pull(pp->ofpacts, sizeof *clone); |
4332b671 | 6048 | error = ofpacts_parse_copy(arg, pp, false, OFPACT_CLONE); |
7ae62a67 | 6049 | /* header points to the action list */ |
efefbcae BP |
6050 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, sizeof *clone); |
6051 | clone = pp->ofpacts->header; | |
7ae62a67 | 6052 | |
8e738337 | 6053 | if (ofpbuf_oversized(pp->ofpacts)) { |
9d7893b3 | 6054 | free(error); |
8e738337 TA |
6055 | return xasprintf("input too big"); |
6056 | } | |
6057 | ||
efefbcae BP |
6058 | ofpact_finish_CLONE(pp->ofpacts, &clone); |
6059 | ofpbuf_push_uninit(pp->ofpacts, clone_offset); | |
7ae62a67 WT |
6060 | return error; |
6061 | } | |
6062 | ||
6063 | static void | |
50f96b10 | 6064 | format_CLONE(const struct ofpact_nest *a, |
efefbcae | 6065 | const struct ofpact_format_params *fp) |
7ae62a67 | 6066 | { |
efefbcae BP |
6067 | ds_put_format(fp->s, "%sclone(%s", colors.paren, colors.end); |
6068 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
6069 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
7ae62a67 | 6070 | } |
ae6f7530 BP |
6071 | |
6072 | static enum ofperr | |
6073 | check_subactions(struct ofpact *ofpacts, size_t ofpacts_len, | |
6074 | struct ofpact_check_params *cp) | |
6075 | { | |
6076 | struct ofpact_check_params sub = *cp; | |
6077 | enum ofperr error = ofpacts_check(ofpacts, ofpacts_len, &sub); | |
6078 | cp->usable_protocols &= sub.usable_protocols; | |
6079 | return error; | |
6080 | } | |
6081 | ||
6082 | static enum ofperr | |
6083 | check_CLONE(struct ofpact_nest *a, struct ofpact_check_params *cp) | |
6084 | { | |
6085 | return check_subactions(a->actions, ofpact_nest_get_action_len(a), cp); | |
6086 | } | |
7ae62a67 | 6087 | \f |
c2d936a4 BP |
6088 | /* Action structure for NXAST_SAMPLE. |
6089 | * | |
6090 | * Samples matching packets with the given probability and sends them | |
6091 | * each to the set of collectors identified with the given ID. The | |
6092 | * probability is expressed as a number of packets to be sampled out | |
6093 | * of USHRT_MAX packets, and must be >0. | |
6094 | * | |
6095 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
6096 | * record sent for each sampled packet is associated with the given | |
6097 | * observation domain ID and observation point ID. Each IPFIX flow | |
6098 | * record contain the sampled packet's headers when executing this | |
6099 | * rule. If a sampled packet's headers are modified by previous | |
6100 | * actions in the flow, those modified headers are sent. */ | |
6101 | struct nx_action_sample { | |
6102 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6103 | ovs_be16 len; /* Length is 24. */ | |
6104 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6105 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
6106 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
6107 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
6108 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
6109 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
6110 | }; | |
6111 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
6112 | ||
4930ea56 | 6113 | /* Action structure for NXAST_SAMPLE2 and NXAST_SAMPLE3. |
f69f713b | 6114 | * |
4930ea56 BP |
6115 | * NXAST_SAMPLE2 was added in Open vSwitch 2.5.90. Compared to NXAST_SAMPLE, |
6116 | * it adds support for exporting egress tunnel information. | |
6117 | * | |
6118 | * NXAST_SAMPLE3 was added in Open vSwitch 2.6.90. Compared to NXAST_SAMPLE2, | |
6119 | * it adds support for the 'direction' field. */ | |
f69f713b BY |
6120 | struct nx_action_sample2 { |
6121 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6122 | ovs_be16 len; /* Length is 32. */ | |
6123 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6124 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
6125 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
6126 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
6127 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
6128 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
6129 | ovs_be16 sampling_port; /* Sampling port. */ | |
4930ea56 BP |
6130 | uint8_t direction; /* NXAST_SAMPLE3 only. */ |
6131 | uint8_t zeros[5]; /* Pad to a multiple of 8 bytes */ | |
f69f713b BY |
6132 | }; |
6133 | OFP_ASSERT(sizeof(struct nx_action_sample2) == 32); | |
6134 | ||
c2d936a4 | 6135 | static enum ofperr |
f3cd3ac7 JS |
6136 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
6137 | enum ofp_version ofp_version OVS_UNUSED, | |
6138 | struct ofpbuf *out) | |
c2d936a4 BP |
6139 | { |
6140 | struct ofpact_sample *sample; | |
6141 | ||
6142 | sample = ofpact_put_SAMPLE(out); | |
f69f713b BY |
6143 | sample->ofpact.raw = NXAST_RAW_SAMPLE; |
6144 | sample->probability = ntohs(nas->probability); | |
6145 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
6146 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
6147 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 6148 | sample->sampling_port = OFPP_NONE; |
4930ea56 | 6149 | sample->direction = NX_ACTION_SAMPLE_DEFAULT; |
f69f713b BY |
6150 | |
6151 | if (sample->probability == 0) { | |
6152 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6153 | } | |
6154 | ||
6155 | return 0; | |
6156 | } | |
6157 | ||
6158 | static enum ofperr | |
4930ea56 BP |
6159 | decode_SAMPLE2(const struct nx_action_sample2 *nas, |
6160 | enum ofp_raw_action_type raw, | |
6161 | enum nx_action_sample_direction direction, | |
6162 | struct ofpact_sample *sample) | |
f69f713b | 6163 | { |
4930ea56 | 6164 | sample->ofpact.raw = raw; |
c2d936a4 BP |
6165 | sample->probability = ntohs(nas->probability); |
6166 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
6167 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
6168 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 6169 | sample->sampling_port = u16_to_ofp(ntohs(nas->sampling_port)); |
4930ea56 | 6170 | sample->direction = direction; |
c2d936a4 BP |
6171 | |
6172 | if (sample->probability == 0) { | |
6173 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6174 | } | |
6175 | ||
6176 | return 0; | |
6177 | } | |
6178 | ||
4930ea56 BP |
6179 | static enum ofperr |
6180 | decode_NXAST_RAW_SAMPLE2(const struct nx_action_sample2 *nas, | |
6181 | enum ofp_version ofp_version OVS_UNUSED, | |
6182 | struct ofpbuf *out) | |
6183 | { | |
6184 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE2, NX_ACTION_SAMPLE_DEFAULT, | |
6185 | ofpact_put_SAMPLE(out)); | |
6186 | } | |
6187 | ||
6188 | static enum ofperr | |
6189 | decode_NXAST_RAW_SAMPLE3(const struct nx_action_sample2 *nas, | |
6190 | enum ofp_version ofp_version OVS_UNUSED, | |
6191 | struct ofpbuf *out) | |
6192 | { | |
6193 | struct ofpact_sample *sample = ofpact_put_SAMPLE(out); | |
6194 | if (!is_all_zeros(nas->zeros, sizeof nas->zeros)) { | |
6195 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
6196 | } | |
6197 | if (nas->direction != NX_ACTION_SAMPLE_DEFAULT && | |
6198 | nas->direction != NX_ACTION_SAMPLE_INGRESS && | |
6199 | nas->direction != NX_ACTION_SAMPLE_EGRESS) { | |
6200 | VLOG_WARN_RL(&rl, "invalid sample direction %"PRIu8, nas->direction); | |
6201 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6202 | } | |
6203 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE3, nas->direction, sample); | |
6204 | } | |
6205 | ||
6206 | static void | |
6207 | encode_SAMPLE2(const struct ofpact_sample *sample, | |
6208 | struct nx_action_sample2 *nas) | |
6209 | { | |
6210 | nas->probability = htons(sample->probability); | |
6211 | nas->collector_set_id = htonl(sample->collector_set_id); | |
6212 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
6213 | nas->obs_point_id = htonl(sample->obs_point_id); | |
6214 | nas->sampling_port = htons(ofp_to_u16(sample->sampling_port)); | |
6215 | nas->direction = sample->direction; | |
6216 | } | |
6217 | ||
c2d936a4 BP |
6218 | static void |
6219 | encode_SAMPLE(const struct ofpact_sample *sample, | |
6220 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
6221 | { | |
4930ea56 BP |
6222 | if (sample->ofpact.raw == NXAST_RAW_SAMPLE3 |
6223 | || sample->direction != NX_ACTION_SAMPLE_DEFAULT) { | |
6224 | encode_SAMPLE2(sample, put_NXAST_SAMPLE3(out)); | |
6225 | } else if (sample->ofpact.raw == NXAST_RAW_SAMPLE2 | |
6226 | || sample->sampling_port != OFPP_NONE) { | |
6227 | encode_SAMPLE2(sample, put_NXAST_SAMPLE2(out)); | |
f69f713b BY |
6228 | } else { |
6229 | struct nx_action_sample *nas = put_NXAST_SAMPLE(out); | |
6230 | nas->probability = htons(sample->probability); | |
6231 | nas->collector_set_id = htonl(sample->collector_set_id); | |
6232 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
6233 | nas->obs_point_id = htonl(sample->obs_point_id); | |
6234 | } | |
c2d936a4 BP |
6235 | } |
6236 | ||
6237 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
efefbcae | 6238 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
6239 | * |
6240 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6241 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 6242 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6243 | parse_SAMPLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6244 | { |
efefbcae | 6245 | struct ofpact_sample *os = ofpact_put_SAMPLE(pp->ofpacts); |
f69f713b | 6246 | os->sampling_port = OFPP_NONE; |
4930ea56 | 6247 | os->direction = NX_ACTION_SAMPLE_DEFAULT; |
c2d936a4 | 6248 | |
f69f713b | 6249 | char *key, *value; |
c2d936a4 BP |
6250 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
6251 | char *error = NULL; | |
6252 | ||
6253 | if (!strcmp(key, "probability")) { | |
6254 | error = str_to_u16(value, "probability", &os->probability); | |
6255 | if (!error && os->probability == 0) { | |
6256 | error = xasprintf("invalid probability value \"%s\"", value); | |
6257 | } | |
6258 | } else if (!strcmp(key, "collector_set_id")) { | |
6259 | error = str_to_u32(value, &os->collector_set_id); | |
6260 | } else if (!strcmp(key, "obs_domain_id")) { | |
6261 | error = str_to_u32(value, &os->obs_domain_id); | |
6262 | } else if (!strcmp(key, "obs_point_id")) { | |
6263 | error = str_to_u32(value, &os->obs_point_id); | |
f69f713b | 6264 | } else if (!strcmp(key, "sampling_port")) { |
efefbcae | 6265 | if (!ofputil_port_from_string(value, pp->port_map, |
50f96b10 | 6266 | &os->sampling_port)) { |
f69f713b BY |
6267 | error = xasprintf("%s: unknown port", value); |
6268 | } | |
4930ea56 BP |
6269 | } else if (!strcmp(key, "ingress")) { |
6270 | os->direction = NX_ACTION_SAMPLE_INGRESS; | |
6271 | } else if (!strcmp(key, "egress")) { | |
6272 | os->direction = NX_ACTION_SAMPLE_EGRESS; | |
c2d936a4 BP |
6273 | } else { |
6274 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
6275 | key); | |
6276 | } | |
6277 | if (error) { | |
6278 | return error; | |
6279 | } | |
6280 | } | |
6281 | if (os->probability == 0) { | |
6282 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
6283 | } | |
f69f713b | 6284 | |
c2d936a4 BP |
6285 | return NULL; |
6286 | } | |
6287 | ||
6288 | static void | |
50f96b10 | 6289 | format_SAMPLE(const struct ofpact_sample *a, |
efefbcae | 6290 | const struct ofpact_format_params *fp) |
c2d936a4 | 6291 | { |
efefbcae | 6292 | ds_put_format(fp->s, "%ssample(%s%sprobability=%s%"PRIu16 |
b1c5bf1f QM |
6293 | ",%scollector_set_id=%s%"PRIu32 |
6294 | ",%sobs_domain_id=%s%"PRIu32 | |
f69f713b | 6295 | ",%sobs_point_id=%s%"PRIu32, |
b1c5bf1f QM |
6296 | colors.paren, colors.end, |
6297 | colors.param, colors.end, a->probability, | |
6298 | colors.param, colors.end, a->collector_set_id, | |
6299 | colors.param, colors.end, a->obs_domain_id, | |
f69f713b BY |
6300 | colors.param, colors.end, a->obs_point_id); |
6301 | if (a->sampling_port != OFPP_NONE) { | |
efefbcae BP |
6302 | ds_put_format(fp->s, ",%ssampling_port=%s", colors.param, colors.end); |
6303 | ofputil_format_port(a->sampling_port, fp->port_map, fp->s); | |
f69f713b | 6304 | } |
4930ea56 | 6305 | if (a->direction == NX_ACTION_SAMPLE_INGRESS) { |
efefbcae | 6306 | ds_put_format(fp->s, ",%singress%s", colors.param, colors.end); |
4930ea56 | 6307 | } else if (a->direction == NX_ACTION_SAMPLE_EGRESS) { |
efefbcae | 6308 | ds_put_format(fp->s, ",%segress%s", colors.param, colors.end); |
4930ea56 | 6309 | } |
efefbcae | 6310 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 | 6311 | } |
ae6f7530 BP |
6312 | |
6313 | static enum ofperr | |
6314 | check_SAMPLE(const struct ofpact_sample *a OVS_UNUSED, | |
6315 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6316 | { | |
6317 | return 0; | |
6318 | } | |
c2d936a4 | 6319 | \f |
a934a3dd | 6320 | /* debug instructions. */ |
d4abaff5 BP |
6321 | |
6322 | static bool enable_debug; | |
6323 | ||
6324 | void | |
6325 | ofpact_dummy_enable(void) | |
6326 | { | |
6327 | enable_debug = true; | |
6328 | } | |
6329 | ||
6330 | static enum ofperr | |
6331 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
6332 | { | |
6333 | if (!enable_debug) { | |
6334 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
6335 | } | |
6336 | ||
6337 | ofpact_put_DEBUG_RECIRC(out); | |
6338 | return 0; | |
6339 | } | |
6340 | ||
6341 | static void | |
6342 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
6343 | enum ofp_version ofp_version OVS_UNUSED, | |
6344 | struct ofpbuf *out) | |
6345 | { | |
6346 | put_NXAST_DEBUG_RECIRC(out); | |
6347 | } | |
6348 | ||
6349 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6350 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
d4abaff5 | 6351 | { |
efefbcae | 6352 | ofpact_put_DEBUG_RECIRC(pp->ofpacts); |
d4abaff5 BP |
6353 | return NULL; |
6354 | } | |
6355 | ||
6356 | static void | |
50f96b10 | 6357 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6358 | const struct ofpact_format_params *fp) |
d4abaff5 | 6359 | { |
efefbcae | 6360 | ds_put_format(fp->s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 6361 | } |
07659514 | 6362 | |
ae6f7530 BP |
6363 | static enum ofperr |
6364 | check_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, | |
6365 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6366 | { | |
6367 | return 0; | |
6368 | } | |
6369 | ||
a934a3dd JP |
6370 | static enum ofperr |
6371 | decode_NXAST_RAW_DEBUG_SLOW(struct ofpbuf *out) | |
6372 | { | |
6373 | if (!enable_debug) { | |
6374 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
6375 | } | |
6376 | ||
6377 | ofpact_put_DEBUG_SLOW(out); | |
6378 | return 0; | |
6379 | } | |
6380 | ||
6381 | static void | |
6382 | encode_DEBUG_SLOW(const struct ofpact_null *n OVS_UNUSED, | |
6383 | enum ofp_version ofp_version OVS_UNUSED, | |
6384 | struct ofpbuf *out) | |
6385 | { | |
6386 | put_NXAST_DEBUG_SLOW(out); | |
6387 | } | |
6388 | ||
6389 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6390 | parse_DEBUG_SLOW(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
a934a3dd | 6391 | { |
efefbcae | 6392 | ofpact_put_DEBUG_SLOW(pp->ofpacts); |
a934a3dd JP |
6393 | return NULL; |
6394 | } | |
6395 | ||
6396 | static void | |
6397 | format_DEBUG_SLOW(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 6398 | const struct ofpact_format_params *fp) |
a934a3dd | 6399 | { |
efefbcae | 6400 | ds_put_format(fp->s, "%sdebug_slow%s", colors.value, colors.end); |
a934a3dd JP |
6401 | } |
6402 | ||
ae6f7530 BP |
6403 | static enum ofperr |
6404 | check_DEBUG_SLOW(const struct ofpact_null *a OVS_UNUSED, | |
6405 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6406 | { | |
6407 | return 0; | |
6408 | } | |
6409 | ||
07659514 JS |
6410 | /* Action structure for NXAST_CT. |
6411 | * | |
6412 | * Pass traffic to the connection tracker. | |
6413 | * | |
6414 | * There are two important concepts to understanding the connection tracking | |
6415 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
6416 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
6417 | * | |
6418 | * - Packet State: | |
6419 | * | |
f6fabcc6 JP |
6420 | * Untracked packets have an unknown connection state. In most |
6421 | * cases, packets entering the OpenFlow pipeline will initially be | |
6422 | * in the untracked state. Untracked packets may become tracked by | |
6423 | * executing NXAST_CT with a "recirc_table" specified. This makes | |
6424 | * various aspects about the connection available, in particular | |
6425 | * the connection state. | |
6426 | * | |
6427 | * An NXAST_CT action always puts the packet into an untracked | |
6428 | * state for the current processing path. If "recirc_table" is | |
6429 | * set, execution is forked and the packet passes through the | |
6430 | * connection tracker. The specified table's processing path is | |
6431 | * able to match on Connection state until the end of the OpenFlow | |
6432 | * pipeline or NXAST_CT is called again. | |
07659514 JS |
6433 | * |
6434 | * - Connection State: | |
6435 | * | |
6436 | * Multiple packets may be associated with a single connection. Initially, | |
6437 | * all connections are uncommitted. The connection state corresponding to | |
6438 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
6439 | * | |
6440 | * Uncommitted connections have no state stored about them. Uncommitted | |
6441 | * connections may transition into the committed state by executing | |
6442 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
6443 | * | |
6444 | * Once a connection becomes committed, information may be gathered about | |
6445 | * the connection by passing subsequent packets through the connection | |
6446 | * tracker, and the state of the connection will be stored beyond the | |
6447 | * lifetime of packet processing. | |
6448 | * | |
a76a37ef JR |
6449 | * A committed connection always has the directionality of the packet that |
6450 | * caused the connection to be committed in the first place. This is the | |
6451 | * "original direction" of the connection, and the opposite direction is | |
6452 | * the "reply direction". If a connection is already committed, but it is | |
6453 | * then decided that the original direction should be the opposite of the | |
6454 | * existing connection, NX_CT_F_FORCE flag may be used in addition to | |
6455 | * NX_CT_F_COMMIT flag to in effect terminate the existing connection and | |
6456 | * start a new one in the current direction. | |
6457 | * | |
07659514 JS |
6458 | * Connections may transition back into the uncommitted state due to |
6459 | * external timers, or due to the contents of packets that are sent to the | |
6460 | * connection tracker. This behaviour is outside of the scope of the | |
6461 | * OpenFlow interface. | |
6462 | * | |
6463 | * The "zone" specifies a context within which the tracking is done: | |
6464 | * | |
6465 | * The connection tracking zone is a 16-bit number. Each zone is an | |
6466 | * independent connection tracking context. The connection state for each | |
6467 | * connection is completely separate for each zone, so if a connection | |
6468 | * is committed to zone A, then it will remain uncommitted in zone B. | |
6469 | * If NXAST_CT is executed with the same zone multiple times, later | |
6470 | * executions have no effect. | |
6471 | * | |
6472 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
6473 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
6474 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
6475 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
6476 | * are the same as the acceptable nxm_header values for the 'src' field of | |
6477 | * NXAST_REG_MOVE. | |
6478 | * | |
6479 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
6480 | * connection tracking zone. | |
6481 | * | |
6482 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
6483 | * | |
6484 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
6485 | * packet will be logically cloned prior to executing this action. One | |
6486 | * copy will be sent to the connection tracker, then will be re-injected | |
6487 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
6488 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
6489 | * fields will be populated. The original instance of the packet will | |
6490 | * continue the current actions list. This can be thought of as similar to | |
6491 | * the effect of the "output" action: One copy is sent out (in this case, | |
6492 | * to the connection tracker), but the current copy continues processing. | |
6493 | * | |
6494 | * It is strongly recommended that this table is later than the current | |
6495 | * table, to prevent loops. | |
8e53fe8c | 6496 | * |
d787ad39 JS |
6497 | * The "alg" attaches protocol-specific behaviour to this action: |
6498 | * | |
6499 | * The ALG is a 16-bit number which specifies that additional | |
6500 | * processing should be applied to this traffic. | |
6501 | * | |
6502 | * Protocol | Value | Meaning | |
6503 | * -------------------------------------------------------------------- | |
6504 | * None | 0 | No protocol-specific behaviour. | |
6505 | * FTP | 21 | Parse FTP control connections and observe the | |
6506 | * | | negotiation of related data connections. | |
6507 | * Other | Other | Unsupported protocols. | |
6508 | * | |
6509 | * By way of example, if FTP control connections have this action applied | |
6510 | * with the ALG set to FTP (21), then the connection tracker will observe | |
6511 | * the negotiation of data connections. This allows the connection | |
6512 | * tracker to identify subsequent data connections as "related" to this | |
6513 | * existing connection. The "related" flag will be populated in the | |
6514 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
6515 | * specified. | |
6516 | * | |
8e53fe8c JS |
6517 | * Zero or more actions may immediately follow this action. These actions will |
6518 | * be executed within the context of the connection tracker, and they require | |
a76a37ef | 6519 | * NX_CT_F_COMMIT flag be set. |
07659514 JS |
6520 | */ |
6521 | struct nx_action_conntrack { | |
6522 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6523 | ovs_be16 len; /* At least 24. */ | |
6524 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6525 | ovs_be16 subtype; /* NXAST_CT. */ | |
6526 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
6527 | * Unspecified flag bits must be zero. */ | |
6528 | ovs_be32 zone_src; /* Connection tracking context. */ | |
6529 | union { | |
6530 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
6531 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
6532 | }; | |
6533 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
6534 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
6535 | uint8_t pad[3]; /* Zeroes */ |
6536 | ovs_be16 alg; /* Well-known port number for the protocol. | |
6537 | * 0 indicates no ALG is required. */ | |
07659514 JS |
6538 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
6539 | * these is included in 'len'. */ | |
6540 | }; | |
6541 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
6542 | ||
6543 | static enum ofperr | |
6544 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
04f48a68 | 6545 | struct ofpact_conntrack *out, |
5c7c16d8 | 6546 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
07659514 JS |
6547 | { |
6548 | if (nac->zone_src) { | |
6549 | enum ofperr error; | |
6550 | ||
07659514 JS |
6551 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); |
6552 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
5c7c16d8 YHW |
6553 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nac->zone_src), |
6554 | vl_mff_map, &out->zone_src.field, | |
6555 | tlv_bitmap); | |
6556 | if (error) { | |
6557 | return error; | |
04f48a68 YHW |
6558 | } |
6559 | ||
07659514 JS |
6560 | error = mf_check_src(&out->zone_src, NULL); |
6561 | if (error) { | |
6562 | return error; | |
6563 | } | |
6564 | ||
6565 | if (out->zone_src.n_bits != 16) { | |
6566 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
6567 | out->zone_src.n_bits); | |
6568 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
6569 | } | |
6570 | } else { | |
6571 | out->zone_src.field = NULL; | |
6572 | out->zone_imm = ntohs(nac->zone_imm); | |
6573 | } | |
6574 | ||
6575 | return 0; | |
6576 | } | |
6577 | ||
6578 | static enum ofperr | |
6579 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
04f48a68 | 6580 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
6581 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
6582 | struct ofpbuf *out) | |
07659514 | 6583 | { |
8e53fe8c | 6584 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 6585 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
a76a37ef JR |
6586 | int error; |
6587 | ||
07659514 | 6588 | conntrack->flags = ntohs(nac->flags); |
a76a37ef JR |
6589 | if (conntrack->flags & NX_CT_F_FORCE && |
6590 | !(conntrack->flags & NX_CT_F_COMMIT)) { | |
6591 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
6592 | goto out; | |
6593 | } | |
0a2869d5 | 6594 | |
5c7c16d8 | 6595 | error = decode_ct_zone(nac, conntrack, vl_mff_map, tlv_bitmap); |
07659514 JS |
6596 | if (error) { |
6597 | goto out; | |
6598 | } | |
6599 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 6600 | conntrack->alg = ntohs(nac->alg); |
07659514 | 6601 | |
8e53fe8c JS |
6602 | ofpbuf_pull(out, sizeof(*conntrack)); |
6603 | ||
0a2869d5 BP |
6604 | struct ofpbuf openflow = ofpbuf_const_initializer( |
6605 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
6606 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
6607 | ofp_version, | |
6608 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
6609 | out, OFPACT_CT, vl_mff_map, |
6610 | tlv_bitmap); | |
8e53fe8c | 6611 | if (error) { |
3ee9b38d | 6612 | return error; |
8e53fe8c JS |
6613 | } |
6614 | ||
6615 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
6616 | out->header = &conntrack->ofpact; | |
ce058104 | 6617 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
6618 | |
6619 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
6620 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
6621 | const struct ofpact *a; |
6622 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
6623 | ||
6624 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
6625 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
6626 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
6627 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
6628 | "other than NAT without arguments are specified."); | |
6629 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
6630 | goto out; | |
6631 | } | |
6632 | } | |
8e53fe8c JS |
6633 | } |
6634 | ||
07659514 | 6635 | out: |
8e53fe8c | 6636 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
6637 | return error; |
6638 | } | |
6639 | ||
6640 | static void | |
6641 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 6642 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
6643 | { |
6644 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
6645 | const size_t ofs = out->size; |
6646 | size_t len; | |
07659514 JS |
6647 | |
6648 | nac = put_NXAST_CT(out); | |
6649 | nac->flags = htons(conntrack->flags); | |
6650 | if (conntrack->zone_src.field) { | |
04f48a68 | 6651 | nac->zone_src = htonl(nxm_header_from_mff(conntrack->zone_src.field)); |
07659514 JS |
6652 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, |
6653 | conntrack->zone_src.n_bits); | |
6654 | } else { | |
6655 | nac->zone_src = htonl(0); | |
6656 | nac->zone_imm = htons(conntrack->zone_imm); | |
6657 | } | |
6658 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 6659 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
6660 | |
6661 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
6662 | ofpact_ct_get_action_len(conntrack), | |
6663 | out, ofp_version); | |
6664 | len += sizeof(*nac); | |
6665 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
6666 | nac->len = htons(len); | |
07659514 JS |
6667 | } |
6668 | ||
50f96b10 | 6669 | static char *OVS_WARN_UNUSED_RESULT |
efefbcae | 6670 | parse_NAT(char *arg, const struct ofpact_parse_params *pp); |
9ac0aada | 6671 | |
07659514 | 6672 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
efefbcae | 6673 | * action to 'pp->ofpacts'. |
07659514 JS |
6674 | * |
6675 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6676 | * error. The caller is responsible for freeing the returned string. */ | |
6677 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6678 | parse_CT(char *arg, const struct ofpact_parse_params *pp) |
07659514 | 6679 | { |
efefbcae | 6680 | const size_t ct_offset = ofpacts_pull(pp->ofpacts); |
07659514 JS |
6681 | struct ofpact_conntrack *oc; |
6682 | char *error = NULL; | |
6683 | char *key, *value; | |
6684 | ||
efefbcae | 6685 | oc = ofpact_put_CT(pp->ofpacts); |
07659514 JS |
6686 | oc->flags = 0; |
6687 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
6688 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6689 | if (!strcmp(key, "commit")) { | |
6690 | oc->flags |= NX_CT_F_COMMIT; | |
a76a37ef JR |
6691 | } else if (!strcmp(key, "force")) { |
6692 | oc->flags |= NX_CT_F_FORCE; | |
07659514 | 6693 | } else if (!strcmp(key, "table")) { |
4bc938cc BP |
6694 | if (!ofputil_table_from_string(value, pp->table_map, |
6695 | &oc->recirc_table)) { | |
6696 | error = xasprintf("unknown table %s", value); | |
6697 | } else if (oc->recirc_table == NX_CT_RECIRC_NONE) { | |
fd13c6b5 | 6698 | error = xasprintf("invalid table %#"PRIx8, oc->recirc_table); |
07659514 JS |
6699 | } |
6700 | } else if (!strcmp(key, "zone")) { | |
6701 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
6702 | ||
6703 | if (error) { | |
6704 | free(error); | |
6705 | error = mf_parse_subfield(&oc->zone_src, value); | |
6706 | if (error) { | |
6707 | return error; | |
6708 | } | |
6709 | } | |
d787ad39 JS |
6710 | } else if (!strcmp(key, "alg")) { |
6711 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada | 6712 | } else if (!strcmp(key, "nat")) { |
efefbcae | 6713 | const size_t nat_offset = ofpacts_pull(pp->ofpacts); |
9ac0aada | 6714 | |
efefbcae | 6715 | error = parse_NAT(value, pp); |
9ac0aada | 6716 | /* Update CT action pointer and length. */ |
efefbcae BP |
6717 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, nat_offset); |
6718 | oc = pp->ofpacts->header; | |
8e53fe8c JS |
6719 | } else if (!strcmp(key, "exec")) { |
6720 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
6721 | * nesting can be handled transparently. */ | |
76e3e669 | 6722 | enum ofputil_protocol usable_protocols2; |
efefbcae | 6723 | const size_t exec_offset = ofpacts_pull(pp->ofpacts); |
76e3e669 | 6724 | |
76e3e669 JR |
6725 | /* Initializes 'usable_protocol2', fold it back to |
6726 | * '*usable_protocols' afterwards, so that we do not lose | |
6727 | * restrictions already in there. */ | |
efefbcae BP |
6728 | struct ofpact_parse_params pp2 = *pp; |
6729 | pp2.usable_protocols = &usable_protocols2; | |
6730 | error = ofpacts_parse_copy(value, &pp2, false, OFPACT_CT); | |
6731 | *pp->usable_protocols &= usable_protocols2; | |
6732 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, exec_offset); | |
6733 | oc = pp->ofpacts->header; | |
07659514 JS |
6734 | } else { |
6735 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
6736 | } | |
6737 | if (error) { | |
6738 | break; | |
6739 | } | |
6740 | } | |
fce16ca1 | 6741 | if (!error && oc->flags & NX_CT_F_FORCE && !(oc->flags & NX_CT_F_COMMIT)) { |
a76a37ef JR |
6742 | error = xasprintf("\"force\" flag requires \"commit\" flag."); |
6743 | } | |
8e738337 TA |
6744 | |
6745 | if (ofpbuf_oversized(pp->ofpacts)) { | |
047b920e | 6746 | free(error); |
8e738337 TA |
6747 | return xasprintf("input too big"); |
6748 | } | |
6749 | ||
efefbcae BP |
6750 | ofpact_finish_CT(pp->ofpacts, &oc); |
6751 | ofpbuf_push_uninit(pp->ofpacts, ct_offset); | |
07659514 JS |
6752 | return error; |
6753 | } | |
6754 | ||
d787ad39 JS |
6755 | static void |
6756 | format_alg(int port, struct ds *s) | |
6757 | { | |
40c7b2fc JS |
6758 | switch(port) { |
6759 | case IPPORT_FTP: | |
b1c5bf1f | 6760 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
40c7b2fc JS |
6761 | break; |
6762 | case IPPORT_TFTP: | |
6763 | ds_put_format(s, "%salg=%stftp,", colors.param, colors.end); | |
6764 | break; | |
6765 | case 0: | |
6766 | /* Don't print. */ | |
6767 | break; | |
6768 | default: | |
b1c5bf1f | 6769 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
40c7b2fc | 6770 | break; |
d787ad39 JS |
6771 | } |
6772 | } | |
6773 | ||
50f96b10 | 6774 | static void format_NAT(const struct ofpact_nat *, |
efefbcae | 6775 | const struct ofpact_format_params *fp); |
9ac0aada | 6776 | |
07659514 | 6777 | static void |
50f96b10 | 6778 | format_CT(const struct ofpact_conntrack *a, |
efefbcae | 6779 | const struct ofpact_format_params *fp) |
07659514 | 6780 | { |
efefbcae | 6781 | ds_put_format(fp->s, "%sct(%s", colors.paren, colors.end); |
07659514 | 6782 | if (a->flags & NX_CT_F_COMMIT) { |
efefbcae | 6783 | ds_put_format(fp->s, "%scommit%s,", colors.value, colors.end); |
07659514 | 6784 | } |
a76a37ef | 6785 | if (a->flags & NX_CT_F_FORCE) { |
efefbcae | 6786 | ds_put_format(fp->s, "%sforce%s,", colors.value, colors.end); |
a76a37ef | 6787 | } |
07659514 | 6788 | if (a->recirc_table != NX_CT_RECIRC_NONE) { |
4bc938cc BP |
6789 | ds_put_format(fp->s, "%stable=%s", colors.special, colors.end); |
6790 | ofputil_format_table(a->recirc_table, fp->table_map, fp->s); | |
6791 | ds_put_char(fp->s, ','); | |
07659514 JS |
6792 | } |
6793 | if (a->zone_src.field) { | |
efefbcae BP |
6794 | ds_put_format(fp->s, "%szone=%s", colors.param, colors.end); |
6795 | mf_format_subfield(&a->zone_src, fp->s); | |
6796 | ds_put_char(fp->s, ','); | |
07659514 | 6797 | } else if (a->zone_imm) { |
efefbcae | 6798 | ds_put_format(fp->s, "%szone=%s%"PRIu16",", |
b1c5bf1f | 6799 | colors.param, colors.end, a->zone_imm); |
07659514 | 6800 | } |
9ac0aada JR |
6801 | /* If the first action is a NAT action, format it outside of the 'exec' |
6802 | * envelope. */ | |
6803 | const struct ofpact *action = a->actions; | |
6804 | size_t actions_len = ofpact_ct_get_action_len(a); | |
6805 | if (actions_len && action->type == OFPACT_NAT) { | |
efefbcae BP |
6806 | format_NAT(ofpact_get_NAT(action), fp); |
6807 | ds_put_char(fp->s, ','); | |
9ac0aada JR |
6808 | actions_len -= OFPACT_ALIGN(action->len); |
6809 | action = ofpact_next(action); | |
6810 | } | |
6811 | if (actions_len) { | |
efefbcae BP |
6812 | ds_put_format(fp->s, "%sexec(%s", colors.paren, colors.end); |
6813 | ofpacts_format(action, actions_len, fp); | |
6814 | ds_put_format(fp->s, "%s),%s", colors.paren, colors.end); | |
8e53fe8c | 6815 | } |
efefbcae BP |
6816 | format_alg(a->alg, fp->s); |
6817 | ds_chomp(fp->s, ','); | |
6818 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
07659514 | 6819 | } |
ae6f7530 BP |
6820 | |
6821 | static enum ofperr | |
6822 | check_CT(struct ofpact_conntrack *a, struct ofpact_check_params *cp) | |
6823 | { | |
6824 | struct flow *flow = &cp->match->flow; | |
6825 | ||
6826 | if (!dl_type_is_ip_any(get_dl_type(flow)) | |
6827 | || (flow->ct_state & CS_INVALID && a->flags & NX_CT_F_COMMIT) | |
6828 | || (a->alg == IPPORT_FTP && flow->nw_proto != IPPROTO_TCP) | |
6829 | || (a->alg == IPPORT_TFTP && flow->nw_proto != IPPROTO_UDP)) { | |
6830 | /* We can't downgrade to OF1.0 and expect inconsistent CT actions | |
6831 | * be silently discarded. Instead, datapath flow install fails, so | |
6832 | * it is better to flag inconsistent CT actions as hard errors. */ | |
6833 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
6834 | } | |
6835 | ||
6836 | if (a->zone_src.field) { | |
6837 | return mf_check_src(&a->zone_src, cp->match); | |
6838 | } | |
6839 | ||
6840 | return check_subactions(a->actions, ofpact_ct_get_action_len(a), cp); | |
6841 | } | |
9ac0aada | 6842 | \f |
72fe7578 BP |
6843 | /* ct_clear action. */ |
6844 | ||
6845 | static enum ofperr | |
6846 | decode_NXAST_RAW_CT_CLEAR(struct ofpbuf *out) | |
6847 | { | |
6848 | ofpact_put_CT_CLEAR(out); | |
6849 | return 0; | |
6850 | } | |
6851 | ||
6852 | static void | |
6853 | encode_CT_CLEAR(const struct ofpact_null *null OVS_UNUSED, | |
6854 | enum ofp_version ofp_version OVS_UNUSED, | |
6855 | struct ofpbuf *out) | |
6856 | { | |
6857 | put_NXAST_CT_CLEAR(out); | |
6858 | } | |
6859 | ||
6860 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6861 | parse_CT_CLEAR(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
72fe7578 | 6862 | { |
efefbcae | 6863 | ofpact_put_CT_CLEAR(pp->ofpacts); |
72fe7578 BP |
6864 | return NULL; |
6865 | } | |
6866 | ||
6867 | static void | |
50f96b10 | 6868 | format_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6869 | const struct ofpact_format_params *fp) |
72fe7578 | 6870 | { |
efefbcae | 6871 | ds_put_format(fp->s, "%sct_clear%s", colors.value, colors.end); |
50f96b10 | 6872 | } |
ae6f7530 BP |
6873 | |
6874 | static enum ofperr | |
6875 | check_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, | |
6876 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6877 | { | |
6878 | return 0; | |
6879 | } | |
50f96b10 | 6880 | \f |
9ac0aada JR |
6881 | /* NAT action. */ |
6882 | ||
6883 | /* Which optional fields are present? */ | |
6884 | enum nx_nat_range { | |
6885 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
6886 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
6887 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
6888 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
6889 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
6890 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
6891 | }; | |
6892 | ||
6893 | /* Action structure for NXAST_NAT. */ | |
6894 | struct nx_action_nat { | |
6895 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6896 | ovs_be16 len; /* At least 16. */ | |
6897 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6898 | ovs_be16 subtype; /* NXAST_NAT. */ | |
6899 | uint8_t pad[2]; /* Must be zero. */ | |
6900 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
6901 | * Unspecified flag bits must be zero. */ | |
6902 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
6903 | /* Followed by optional parameters as specified by 'range_present' */ | |
6904 | }; | |
6905 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
6906 | ||
6907 | static void | |
6908 | encode_NAT(const struct ofpact_nat *nat, | |
6909 | enum ofp_version ofp_version OVS_UNUSED, | |
6910 | struct ofpbuf *out) | |
6911 | { | |
6912 | struct nx_action_nat *nan; | |
6913 | const size_t ofs = out->size; | |
6914 | uint16_t range_present = 0; | |
6915 | ||
6916 | nan = put_NXAST_NAT(out); | |
6917 | nan->flags = htons(nat->flags); | |
6918 | if (nat->range_af == AF_INET) { | |
6919 | if (nat->range.addr.ipv4.min) { | |
6920 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6921 | *min = nat->range.addr.ipv4.min; | |
6922 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
6923 | } | |
6924 | if (nat->range.addr.ipv4.max) { | |
6925 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6926 | *max = nat->range.addr.ipv4.max; | |
6927 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
6928 | } | |
6929 | } else if (nat->range_af == AF_INET6) { | |
6930 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6931 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
6932 | *min = nat->range.addr.ipv6.min; | |
6933 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
6934 | } | |
6935 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
6936 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
6937 | *max = nat->range.addr.ipv6.max; | |
6938 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
6939 | } | |
6940 | } | |
6941 | if (nat->range_af != AF_UNSPEC) { | |
6942 | if (nat->range.proto.min) { | |
6943 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6944 | *min = htons(nat->range.proto.min); | |
6945 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
6946 | } | |
6947 | if (nat->range.proto.max) { | |
6948 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6949 | *max = htons(nat->range.proto.max); | |
6950 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
6951 | } | |
6952 | } | |
6953 | pad_ofpat(out, ofs); | |
6954 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
6955 | nan->range_present = htons(range_present); | |
6956 | } | |
6957 | ||
6958 | static enum ofperr | |
6959 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
6960 | enum ofp_version ofp_version OVS_UNUSED, | |
6961 | struct ofpbuf *out) | |
6962 | { | |
6963 | struct ofpact_nat *nat; | |
6964 | uint16_t range_present = ntohs(nan->range_present); | |
6965 | const char *opts = (char *)(nan + 1); | |
6966 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
6967 | ||
6968 | nat = ofpact_put_NAT(out); | |
6969 | nat->flags = ntohs(nan->flags); | |
6970 | ||
ae8b9260 JR |
6971 | /* Check for unknown or mutually exclusive flags. */ |
6972 | if ((nat->flags & ~NX_NAT_F_MASK) | |
6973 | || (nat->flags & NX_NAT_F_SRC && nat->flags & NX_NAT_F_DST) | |
6974 | || (nat->flags & NX_NAT_F_PROTO_HASH | |
6975 | && nat->flags & NX_NAT_F_PROTO_RANDOM)) { | |
6976 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6977 | } | |
6978 | ||
9ac0aada JR |
6979 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ |
6980 | (LEN >= sizeof(TYPE) \ | |
6981 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
6982 | SRC += sizeof(TYPE)) \ | |
6983 | : NULL) | |
6984 | ||
6985 | nat->range_af = AF_UNSPEC; | |
6986 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
6987 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
6988 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6989 | } | |
6990 | ||
6991 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
6992 | || !nat->range.addr.ipv4.min) { | |
6993 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6994 | } | |
6995 | ||
6996 | nat->range_af = AF_INET; | |
6997 | ||
6998 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6999 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
7000 | ovs_be32)) { | |
7001 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7002 | } | |
7003 | if (ntohl(nat->range.addr.ipv4.max) | |
7004 | < ntohl(nat->range.addr.ipv4.min)) { | |
7005 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7006 | } | |
7007 | } | |
7008 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
7009 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7010 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
7011 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
7012 | struct in6_addr) | |
7013 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
7014 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7015 | } | |
7016 | ||
7017 | nat->range_af = AF_INET6; | |
7018 | ||
7019 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
7020 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
7021 | struct in6_addr)) { | |
7022 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7023 | } | |
7024 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
7025 | sizeof(struct in6_addr)) < 0) { | |
7026 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7027 | } | |
7028 | } | |
7029 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
7030 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7031 | } | |
7032 | ||
7033 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
7034 | ovs_be16 proto; | |
7035 | ||
7036 | if (nat->range_af == AF_UNSPEC) { | |
7037 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7038 | } | |
7039 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
7040 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7041 | } | |
7042 | nat->range.proto.min = ntohs(proto); | |
7043 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
7044 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
7045 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7046 | } | |
7047 | nat->range.proto.max = ntohs(proto); | |
7048 | if (nat->range.proto.max < nat->range.proto.min) { | |
7049 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7050 | } | |
7051 | } | |
7052 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
7053 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7054 | } | |
7055 | ||
7056 | return 0; | |
7057 | } | |
7058 | ||
7059 | static void | |
efefbcae | 7060 | format_NAT(const struct ofpact_nat *a, const struct ofpact_format_params *fp) |
9ac0aada | 7061 | { |
efefbcae | 7062 | ds_put_format(fp->s, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
7063 | |
7064 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
efefbcae BP |
7065 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
7066 | ds_put_format(fp->s, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
b1c5bf1f | 7067 | colors.param, colors.end); |
9ac0aada JR |
7068 | |
7069 | if (a->range_af != AF_UNSPEC) { | |
efefbcae | 7070 | ds_put_format(fp->s, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
7071 | |
7072 | if (a->range_af == AF_INET) { | |
efefbcae | 7073 | ds_put_format(fp->s, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); |
9ac0aada JR |
7074 | |
7075 | if (a->range.addr.ipv4.max | |
7076 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
efefbcae | 7077 | ds_put_format(fp->s, "-"IP_FMT, |
9ac0aada JR |
7078 | IP_ARGS(a->range.addr.ipv4.max)); |
7079 | } | |
7080 | } else if (a->range_af == AF_INET6) { | |
efefbcae | 7081 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, fp->s, |
9ac0aada JR |
7082 | a->range.proto.min); |
7083 | ||
7084 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
7085 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
7086 | sizeof(struct in6_addr)) != 0) { | |
efefbcae BP |
7087 | ds_put_char(fp->s, '-'); |
7088 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, fp->s, | |
9ac0aada JR |
7089 | a->range.proto.min); |
7090 | } | |
7091 | } | |
7092 | if (a->range.proto.min) { | |
efefbcae BP |
7093 | ds_put_char(fp->s, ':'); |
7094 | ds_put_format(fp->s, "%"PRIu16, a->range.proto.min); | |
9ac0aada JR |
7095 | |
7096 | if (a->range.proto.max | |
7097 | && a->range.proto.max != a->range.proto.min) { | |
efefbcae | 7098 | ds_put_format(fp->s, "-%"PRIu16, a->range.proto.max); |
9ac0aada JR |
7099 | } |
7100 | } | |
efefbcae | 7101 | ds_put_char(fp->s, ','); |
9ac0aada JR |
7102 | |
7103 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
efefbcae | 7104 | ds_put_format(fp->s, "%spersistent%s,", |
b1c5bf1f | 7105 | colors.value, colors.end); |
9ac0aada JR |
7106 | } |
7107 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
efefbcae | 7108 | ds_put_format(fp->s, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
7109 | } |
7110 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
efefbcae | 7111 | ds_put_format(fp->s, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
7112 | } |
7113 | } | |
efefbcae BP |
7114 | ds_chomp(fp->s, ','); |
7115 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
9ac0aada JR |
7116 | } |
7117 | } | |
7118 | ||
7119 | static char * OVS_WARN_UNUSED_RESULT | |
7120 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
7121 | { | |
7122 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
7123 | int n = 0; | |
7124 | ||
7125 | on->range_af = AF_UNSPEC; | |
7126 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
7127 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
7128 | on->range_af = AF_INET; | |
7129 | ||
7130 | if (s[n] == '-') { | |
7131 | n++; | |
7132 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
7133 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
7134 | || (ntohl(on->range.addr.ipv4.max) | |
7135 | < ntohl(on->range.addr.ipv4.min))) { | |
7136 | goto error; | |
7137 | } | |
7138 | } | |
7139 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
7140 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
7141 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
7142 | on->range_af = AF_INET6; | |
7143 | ||
7144 | if (s[n] == '-') { | |
7145 | n++; | |
7146 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
7147 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
7148 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
7149 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
7150 | sizeof on->range.addr.ipv6.max) < 0) { | |
7151 | goto error; | |
7152 | } | |
7153 | } | |
7154 | } | |
7155 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
7156 | n++; | |
7157 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
7158 | goto error; | |
7159 | } | |
7160 | if (s[n] == '-') { | |
7161 | n++; | |
7162 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
7163 | || on->range.proto.max < on->range.proto.min) { | |
7164 | goto error; | |
7165 | } | |
7166 | } | |
7167 | } | |
7168 | if (strlen(s) != n) { | |
7169 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
7170 | &s[n], s, n); | |
7171 | } | |
7172 | return NULL; | |
7173 | error: | |
7174 | return xasprintf("invalid nat range \"%s\"", s); | |
7175 | } | |
7176 | ||
7177 | ||
7178 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
efefbcae | 7179 | * action to 'pp->ofpacts'. |
9ac0aada JR |
7180 | * |
7181 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
7182 | * error. The caller is responsible for freeing the returned string. */ | |
7183 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 7184 | parse_NAT(char *arg, const struct ofpact_parse_params *pp) |
9ac0aada | 7185 | { |
efefbcae | 7186 | struct ofpact_nat *on = ofpact_put_NAT(pp->ofpacts); |
9ac0aada JR |
7187 | char *key, *value; |
7188 | ||
7189 | on->flags = 0; | |
7190 | on->range_af = AF_UNSPEC; | |
7191 | ||
7192 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
7193 | char *error = NULL; | |
7194 | ||
7195 | if (!strcmp(key, "src")) { | |
7196 | on->flags |= NX_NAT_F_SRC; | |
7197 | error = str_to_nat_range(value, on); | |
7198 | } else if (!strcmp(key, "dst")) { | |
7199 | on->flags |= NX_NAT_F_DST; | |
7200 | error = str_to_nat_range(value, on); | |
7201 | } else if (!strcmp(key, "persistent")) { | |
7202 | on->flags |= NX_NAT_F_PERSISTENT; | |
7203 | } else if (!strcmp(key, "hash")) { | |
7204 | on->flags |= NX_NAT_F_PROTO_HASH; | |
7205 | } else if (!strcmp(key, "random")) { | |
7206 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
7207 | } else { | |
7208 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
7209 | key); | |
7210 | } | |
7211 | if (error) { | |
7212 | return error; | |
7213 | } | |
7214 | } | |
7215 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
ae8b9260 | 7216 | return xasprintf("May only specify one of \"src\" or \"dst\"."); |
9ac0aada JR |
7217 | } |
7218 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
7219 | if (on->flags) { | |
ae8b9260 | 7220 | return xasprintf("Flags allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
7221 | } |
7222 | if (on->range_af != AF_UNSPEC) { | |
ae8b9260 | 7223 | return xasprintf("Range allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
7224 | } |
7225 | } | |
ae8b9260 JR |
7226 | if (on->flags & NX_NAT_F_PROTO_HASH && on->flags & NX_NAT_F_PROTO_RANDOM) { |
7227 | return xasprintf("Both \"hash\" and \"random\" are not allowed."); | |
7228 | } | |
7229 | ||
9ac0aada JR |
7230 | return NULL; |
7231 | } | |
7232 | ||
ae6f7530 BP |
7233 | static enum ofperr |
7234 | check_NAT(const struct ofpact_nat *a, const struct ofpact_check_params *cp) | |
7235 | { | |
7236 | ovs_be16 dl_type = get_dl_type(&cp->match->flow); | |
7237 | if (!dl_type_is_ip_any(dl_type) || | |
7238 | (a->range_af == AF_INET && dl_type != htons(ETH_TYPE_IP)) || | |
7239 | (a->range_af == AF_INET6 && dl_type != htons(ETH_TYPE_IPV6))) { | |
7240 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7241 | } | |
7242 | return 0; | |
7243 | } | |
7244 | \f | |
aaca4fe0 WT |
7245 | /* Truncate output action. */ |
7246 | struct nx_action_output_trunc { | |
7247 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
7248 | ovs_be16 len; /* At least 16. */ | |
7249 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
7250 | ovs_be16 subtype; /* NXAST_OUTPUT_TRUNC. */ | |
7251 | ovs_be16 port; /* Output port */ | |
7252 | ovs_be32 max_len; /* Truncate packet to size bytes */ | |
7253 | }; | |
7254 | OFP_ASSERT(sizeof(struct nx_action_output_trunc) == 16); | |
7255 | ||
7256 | static enum ofperr | |
7257 | decode_NXAST_RAW_OUTPUT_TRUNC(const struct nx_action_output_trunc *natrc, | |
7258 | enum ofp_version ofp_version OVS_UNUSED, | |
7259 | struct ofpbuf *out) | |
7260 | { | |
7261 | struct ofpact_output_trunc *output_trunc; | |
7262 | ||
7263 | output_trunc = ofpact_put_OUTPUT_TRUNC(out); | |
7264 | output_trunc->max_len = ntohl(natrc->max_len); | |
7265 | output_trunc->port = u16_to_ofp(ntohs(natrc->port)); | |
7266 | ||
7267 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
7268 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7269 | } | |
7270 | return 0; | |
7271 | } | |
7272 | ||
7273 | static void | |
7274 | encode_OUTPUT_TRUNC(const struct ofpact_output_trunc *output_trunc, | |
7275 | enum ofp_version ofp_version OVS_UNUSED, | |
7276 | struct ofpbuf *out) | |
7277 | { | |
7278 | struct nx_action_output_trunc *natrc = put_NXAST_OUTPUT_TRUNC(out); | |
7279 | ||
7280 | natrc->max_len = htonl(output_trunc->max_len); | |
7281 | natrc->port = htons(ofp_to_u16(output_trunc->port)); | |
7282 | } | |
7283 | ||
7284 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 7285 | parse_OUTPUT_TRUNC(const char *arg, |
efefbcae | 7286 | const struct ofpact_parse_params *pp OVS_UNUSED) |
aaca4fe0 WT |
7287 | { |
7288 | /* Disable output_trunc parsing. Expose as output(port=N,max_len=M) and | |
7289 | * reuse parse_OUTPUT to parse output_trunc action. */ | |
7290 | return xasprintf("unknown action %s", arg); | |
7291 | } | |
7292 | ||
7293 | static void | |
50f96b10 | 7294 | format_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, |
efefbcae | 7295 | const struct ofpact_format_params *fp) |
aaca4fe0 | 7296 | { |
efefbcae BP |
7297 | ds_put_format(fp->s, "%soutput%s(port=", colors.special, colors.end); |
7298 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
7299 | ds_put_format(fp->s, ",max_len=%"PRIu32")", a->max_len); | |
aaca4fe0 WT |
7300 | } |
7301 | ||
ae6f7530 BP |
7302 | static enum ofperr |
7303 | check_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, | |
7304 | const struct ofpact_check_params *cp) | |
7305 | { | |
7306 | return ofpact_check_output_port(a->port, cp->max_ports); | |
7307 | } | |
d4abaff5 | 7308 | \f |
4332b671 BP |
7309 | /* Meter. |
7310 | * | |
7311 | * In OpenFlow 1.3 and 1.4, "meter" is an instruction. | |
7312 | * In OpenFlow 1.5 and later, "meter" is an action. | |
7313 | * | |
7314 | * OpenFlow 1.5 */ | |
7315 | ||
7316 | static enum ofperr | |
7317 | decode_OFPAT_RAW15_METER(uint32_t meter_id, | |
7318 | enum ofp_version ofp_version OVS_UNUSED, | |
7319 | struct ofpbuf *out) | |
7320 | { | |
7321 | struct ofpact_meter *om = ofpact_put_METER(out); | |
7322 | om->meter_id = meter_id; | |
7323 | om->provider_meter_id = UINT32_MAX; /* No provider meter ID. */ | |
7324 | return 0; | |
7325 | } | |
c2d936a4 BP |
7326 | |
7327 | static void | |
7328 | encode_METER(const struct ofpact_meter *meter, | |
7329 | enum ofp_version ofp_version, struct ofpbuf *out) | |
7330 | { | |
4332b671 | 7331 | if (ofp_version == OFP13_VERSION || ofp_version == OFP14_VERSION) { |
c2d936a4 | 7332 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); |
4332b671 BP |
7333 | } else if (ofp_version >= OFP15_VERSION) { |
7334 | put_OFPAT15_METER(out, meter->meter_id); | |
c2d936a4 BP |
7335 | } |
7336 | } | |
7337 | ||
cab50449 | 7338 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7339 | parse_METER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 7340 | { |
efefbcae BP |
7341 | *pp->usable_protocols &= OFPUTIL_P_OF13_UP; |
7342 | return str_to_u32(arg, &ofpact_put_METER(pp->ofpacts)->meter_id); | |
c2d936a4 BP |
7343 | } |
7344 | ||
7345 | static void | |
50f96b10 | 7346 | format_METER(const struct ofpact_meter *a, |
efefbcae | 7347 | const struct ofpact_format_params *fp) |
c2d936a4 | 7348 | { |
efefbcae | 7349 | ds_put_format(fp->s, "%smeter:%s%"PRIu32, |
b1c5bf1f | 7350 | colors.param, colors.end, a->meter_id); |
c2d936a4 | 7351 | } |
ae6f7530 BP |
7352 | |
7353 | static enum ofperr | |
7354 | check_METER(const struct ofpact_meter *a, | |
7355 | const struct ofpact_check_params *cp OVS_UNUSED) | |
7356 | { | |
7357 | uint32_t mid = a->meter_id; | |
7358 | return mid == 0 || mid > OFPM13_MAX ? OFPERR_OFPMMFC_INVALID_METER : 0; | |
7359 | } | |
c2d936a4 BP |
7360 | \f |
7361 | /* Clear-Actions instruction. */ | |
7362 | ||
7363 | static void | |
7364 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
7365 | enum ofp_version ofp_version OVS_UNUSED, | |
7366 | struct ofpbuf *out OVS_UNUSED) | |
7367 | { | |
7368 | if (ofp_version > OFP10_VERSION) { | |
7369 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
7370 | } | |
7371 | } | |
7372 | ||
cab50449 | 7373 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7374 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 7375 | { |
efefbcae | 7376 | ofpact_put_CLEAR_ACTIONS(pp->ofpacts); |
c2d936a4 BP |
7377 | return NULL; |
7378 | } | |
7379 | ||
7380 | static void | |
50f96b10 | 7381 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 7382 | const struct ofpact_format_params *fp) |
c2d936a4 | 7383 | { |
efefbcae | 7384 | ds_put_format(fp->s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 | 7385 | } |
ae6f7530 BP |
7386 | |
7387 | static enum ofperr | |
7388 | check_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, | |
7389 | const struct ofpact_check_params *cp OVS_UNUSED) | |
7390 | { | |
7391 | return 0; | |
7392 | } | |
c2d936a4 BP |
7393 | \f |
7394 | /* Write-Actions instruction. */ | |
7395 | ||
7396 | static void | |
7397 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
7398 | enum ofp_version ofp_version, struct ofpbuf *out) | |
7399 | { | |
7400 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 7401 | const size_t ofs = out->size; |
c2d936a4 BP |
7402 | |
7403 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
7404 | ofpacts_put_openflow_actions(actions->actions, | |
7405 | ofpact_nest_get_action_len(actions), | |
7406 | out, ofp_version); | |
7407 | ofpacts_update_instruction_actions(out, ofs); | |
7408 | } | |
7409 | } | |
7410 | ||
cab50449 | 7411 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7412 | parse_WRITE_ACTIONS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 7413 | { |
efefbcae | 7414 | size_t ofs = ofpacts_pull(pp->ofpacts); |
c2d936a4 BP |
7415 | struct ofpact_nest *on; |
7416 | char *error; | |
c2d936a4 BP |
7417 | |
7418 | /* Add a Write-Actions instruction and then pull it off. */ | |
efefbcae BP |
7419 | ofpact_put(pp->ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); |
7420 | ofpbuf_pull(pp->ofpacts, sizeof *on); | |
c2d936a4 BP |
7421 | |
7422 | /* Parse nested actions. | |
7423 | * | |
7424 | * We pulled off "write-actions" and the previous actions because the | |
7425 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
7426 | * that it doesn't actually include the nested actions. That means that | |
7427 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
7428 | * follows a Write-Actions, which is an invalid order. */ | |
efefbcae | 7429 | error = ofpacts_parse(arg, pp, false, OFPACT_WRITE_ACTIONS); |
c2d936a4 BP |
7430 | |
7431 | /* Put the Write-Actions back on and update its length. */ | |
efefbcae BP |
7432 | on = ofpbuf_push_uninit(pp->ofpacts, sizeof *on); |
7433 | on->ofpact.len = pp->ofpacts->size; | |
c2d936a4 BP |
7434 | |
7435 | /* Put any previous actions or instructions back on. */ | |
efefbcae | 7436 | ofpbuf_push_uninit(pp->ofpacts, ofs); |
c2d936a4 BP |
7437 | |
7438 | return error; | |
7439 | } | |
7440 | ||
7441 | static void | |
50f96b10 | 7442 | format_WRITE_ACTIONS(const struct ofpact_nest *a, |
efefbcae | 7443 | const struct ofpact_format_params *fp) |
c2d936a4 | 7444 | { |
efefbcae BP |
7445 | ds_put_format(fp->s, "%swrite_actions(%s", colors.paren, colors.end); |
7446 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
7447 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 | 7448 | } |
ae6f7530 BP |
7449 | |
7450 | static enum ofperr | |
7451 | check_WRITE_ACTIONS(struct ofpact_nest *a, | |
7452 | const struct ofpact_check_params *cp) | |
7453 | { | |
7454 | /* Use a temporary copy of 'cp' to avoid updating 'cp->usable_protocols', | |
7455 | * since we can't check consistency of an action set. */ | |
7456 | struct ofpact_check_params tmp = *cp; | |
7457 | return ofpacts_check(a->actions, ofpact_nest_get_action_len(a), &tmp); | |
7458 | } | |
c2d936a4 BP |
7459 | \f |
7460 | /* Action structure for NXAST_WRITE_METADATA. | |
7461 | * | |
7462 | * Modifies the 'mask' bits of the metadata value. */ | |
7463 | struct nx_action_write_metadata { | |
7464 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
7465 | ovs_be16 len; /* Length is 32. */ | |
7466 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
7467 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
7468 | uint8_t zeros[6]; /* Must be zero. */ | |
7469 | ovs_be64 metadata; /* Metadata register. */ | |
7470 | ovs_be64 mask; /* Metadata mask. */ | |
7471 | }; | |
7472 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
7473 | ||
7474 | static enum ofperr | |
7475 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 7476 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
7477 | struct ofpbuf *out) |
7478 | { | |
7479 | struct ofpact_metadata *om; | |
7480 | ||
7481 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
7482 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
7483 | } | |
7484 | ||
7485 | om = ofpact_put_WRITE_METADATA(out); | |
7486 | om->metadata = nawm->metadata; | |
7487 | om->mask = nawm->mask; | |
7488 | ||
7489 | return 0; | |
7490 | } | |
7491 | ||
7492 | static void | |
7493 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
7494 | enum ofp_version ofp_version, struct ofpbuf *out) | |
7495 | { | |
7496 | if (ofp_version == OFP10_VERSION) { | |
7497 | struct nx_action_write_metadata *nawm; | |
7498 | ||
7499 | nawm = put_NXAST_WRITE_METADATA(out); | |
7500 | nawm->metadata = metadata->metadata; | |
7501 | nawm->mask = metadata->mask; | |
7502 | } else { | |
7503 | struct ofp11_instruction_write_metadata *oiwm; | |
7504 | ||
7505 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
7506 | oiwm->metadata = metadata->metadata; | |
7507 | oiwm->metadata_mask = metadata->mask; | |
7508 | } | |
7509 | } | |
7510 | ||
cab50449 | 7511 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7512 | parse_WRITE_METADATA(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
7513 | { |
7514 | struct ofpact_metadata *om; | |
7515 | char *mask = strchr(arg, '/'); | |
7516 | ||
efefbcae | 7517 | *pp->usable_protocols &= OFPUTIL_P_NXM_OF11_UP; |
c2d936a4 | 7518 | |
efefbcae | 7519 | om = ofpact_put_WRITE_METADATA(pp->ofpacts); |
c2d936a4 BP |
7520 | if (mask) { |
7521 | char *error; | |
7522 | ||
7523 | *mask = '\0'; | |
7524 | error = str_to_be64(mask + 1, &om->mask); | |
7525 | if (error) { | |
7526 | return error; | |
7527 | } | |
7528 | } else { | |
7529 | om->mask = OVS_BE64_MAX; | |
7530 | } | |
7531 | ||
7532 | return str_to_be64(arg, &om->metadata); | |
7533 | } | |
7534 | ||
7535 | static void | |
50f96b10 | 7536 | format_WRITE_METADATA(const struct ofpact_metadata *a, |
efefbcae | 7537 | const struct ofpact_format_params *fp) |
c2d936a4 | 7538 | { |
efefbcae | 7539 | ds_put_format(fp->s, "%swrite_metadata:%s%#"PRIx64, |
b1c5bf1f | 7540 | colors.param, colors.end, ntohll(a->metadata)); |
c2d936a4 | 7541 | if (a->mask != OVS_BE64_MAX) { |
efefbcae | 7542 | ds_put_format(fp->s, "/%#"PRIx64, ntohll(a->mask)); |
c2d936a4 | 7543 | } |
4cceacb9 | 7544 | } |
ae6f7530 BP |
7545 | |
7546 | static enum ofperr | |
7547 | check_WRITE_METADATA(const struct ofpact_metadata *a OVS_UNUSED, | |
7548 | const struct ofpact_check_params *cp OVS_UNUSED) | |
7549 | { | |
7550 | return 0; | |
7551 | } | |
f25d0cf3 | 7552 | \f |
5b34f8fc NS |
7553 | /* Check packet length action. */ |
7554 | ||
7555 | struct nx_action_check_pkt_larger { | |
7556 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
7557 | ovs_be16 len; /* 24. */ | |
7558 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
7559 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
7560 | ovs_be16 pkt_len; /* Length of the packet to check. */ | |
7561 | ovs_be16 offset; /* Result bit offset in destination. */ | |
7562 | /* Followed by: | |
7563 | * - 'dst', as an OXM/NXM header (either 4 or 8 bytes). | |
7564 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
7565 | uint8_t pad[10]; | |
7566 | }; | |
7567 | ||
7568 | OFP_ASSERT(sizeof(struct nx_action_check_pkt_larger) == 24); | |
7569 | ||
7570 | static enum ofperr | |
7571 | decode_NXAST_RAW_CHECK_PKT_LARGER( | |
7572 | const struct nx_action_check_pkt_larger *ncpl, | |
7573 | enum ofp_version ofp_version OVS_UNUSED, | |
7574 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, | |
7575 | struct ofpbuf *out) | |
7576 | { | |
7577 | struct ofpact_check_pkt_larger *check_pkt_larger; | |
7578 | enum ofperr error; | |
7579 | ||
7580 | check_pkt_larger = ofpact_put_CHECK_PKT_LARGER(out); | |
7581 | check_pkt_larger->pkt_len = ntohs(ncpl->pkt_len); | |
7582 | check_pkt_larger->dst.ofs = ntohs(ncpl->offset); | |
7583 | check_pkt_larger->dst.n_bits = 1; | |
7584 | ||
7585 | struct ofpbuf b = ofpbuf_const_initializer(ncpl, ntohs(ncpl->len)); | |
7586 | ofpbuf_pull(&b, OBJECT_OFFSETOF(ncpl, pad)); | |
7587 | ||
7588 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, | |
7589 | &check_pkt_larger->dst.field, | |
7590 | NULL, tlv_bitmap); | |
7591 | if (error) { | |
7592 | return error; | |
7593 | } | |
7594 | ||
7595 | if (!is_all_zeros(b.data, b.size)) { | |
7596 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
7597 | } | |
7598 | ||
7599 | return mf_check_dst(&check_pkt_larger->dst, NULL); | |
7600 | } | |
7601 | ||
7602 | static void | |
7603 | encode_CHECK_PKT_LARGER(const struct ofpact_check_pkt_larger *check_pkt_larger, | |
7604 | enum ofp_version ofp_version OVS_UNUSED, | |
7605 | struct ofpbuf *out) | |
7606 | { | |
7607 | struct nx_action_check_pkt_larger *ncpl = put_NXAST_CHECK_PKT_LARGER(out); | |
7608 | ncpl->pkt_len = htons(check_pkt_larger->pkt_len); | |
7609 | ncpl->offset = htons(check_pkt_larger->dst.ofs); | |
7610 | ||
7611 | if (check_pkt_larger->dst.field) { | |
7612 | size_t size = out->size; | |
7613 | out->size = size - sizeof ncpl->pad; | |
7614 | nx_put_mff_header(out, check_pkt_larger->dst.field, 0, false); | |
7615 | out->size = size; | |
7616 | } | |
7617 | } | |
7618 | ||
7619 | static char * OVS_WARN_UNUSED_RESULT | |
7620 | parse_CHECK_PKT_LARGER(char *arg, const struct ofpact_parse_params *pp) | |
7621 | { | |
7622 | char *value; | |
7623 | char *delim; | |
7624 | char *key; | |
7625 | char *error = set_field_split_str(arg, &key, &value, &delim); | |
7626 | if (error) { | |
7627 | return error; | |
7628 | } | |
7629 | ||
7630 | delim[0] = '\0'; | |
7631 | if (value[strlen(value) - 1] == ')') { | |
7632 | value[strlen(value) - 1] = '\0'; | |
7633 | } | |
7634 | struct mf_subfield dst; | |
7635 | error = mf_parse_subfield(&dst, key); | |
7636 | if (error) { | |
7637 | return error; | |
7638 | } | |
7639 | ||
7640 | if (dst.n_bits != 1) { | |
7641 | return xstrdup("Only 1-bit destination field is allowed"); | |
7642 | } | |
7643 | ||
7644 | struct ofpact_check_pkt_larger *check_pkt_larger = | |
7645 | ofpact_put_CHECK_PKT_LARGER(pp->ofpacts); | |
7646 | error = str_to_u16(value, NULL, &check_pkt_larger->pkt_len); | |
7647 | if (error) { | |
7648 | return error; | |
7649 | } | |
7650 | check_pkt_larger->dst = dst; | |
7651 | return NULL; | |
7652 | } | |
7653 | ||
7654 | static void | |
7655 | format_CHECK_PKT_LARGER(const struct ofpact_check_pkt_larger *a, | |
7656 | const struct ofpact_format_params *fp) | |
7657 | { | |
7658 | ds_put_format(fp->s, "%scheck_pkt_larger(%s%"PRIu32")->", | |
7659 | colors.param, colors.end, a->pkt_len); | |
7660 | mf_format_subfield(&a->dst, fp->s); | |
7661 | } | |
7662 | ||
7663 | static enum ofperr | |
7664 | check_CHECK_PKT_LARGER(const struct ofpact_check_pkt_larger *a OVS_UNUSED, | |
7665 | const struct ofpact_check_params *cp OVS_UNUSED) | |
7666 | { | |
7667 | return 0; | |
7668 | } | |
7669 | \f | |
7670 | ||
c2d936a4 | 7671 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
7672 | |
7673 | static void | |
c2d936a4 BP |
7674 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
7675 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 7676 | { |
c2d936a4 BP |
7677 | if (ofp_version == OFP10_VERSION) { |
7678 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 7679 | |
c2d936a4 BP |
7680 | nar = put_NXAST_RESUBMIT_TABLE(out); |
7681 | nar->table = goto_table->table_id; | |
7682 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
7683 | } else { | |
7684 | struct ofp11_instruction_goto_table *oigt; | |
7685 | ||
7686 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
7687 | oigt->table_id = goto_table->table_id; | |
7688 | memset(oigt->pad, 0, sizeof oigt->pad); | |
7689 | } | |
7690 | } | |
7691 | ||
cab50449 | 7692 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7693 | parse_GOTO_TABLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 7694 | { |
efefbcae | 7695 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(pp->ofpacts); |
4bc938cc BP |
7696 | if (!ofputil_table_from_string(arg, pp->table_map, &ogt->table_id)) { |
7697 | return xasprintf("unknown table \"%s\"", arg); | |
c2d936a4 | 7698 | } |
4bc938cc | 7699 | return NULL; |
c2d936a4 BP |
7700 | } |
7701 | ||
7702 | static void | |
50f96b10 | 7703 | format_GOTO_TABLE(const struct ofpact_goto_table *a, |
efefbcae | 7704 | const struct ofpact_format_params *fp) |
c2d936a4 | 7705 | { |
4bc938cc BP |
7706 | ds_put_format(fp->s, "%sgoto_table:%s", colors.param, colors.end); |
7707 | ofputil_format_table(a->table_id, fp->table_map, fp->s); | |
c2d936a4 | 7708 | } |
ae6f7530 BP |
7709 | |
7710 | static enum ofperr | |
7711 | check_GOTO_TABLE(const struct ofpact_goto_table *a, | |
7712 | const struct ofpact_check_params *cp) | |
7713 | { | |
7714 | if ((cp->table_id != 255 && a->table_id <= cp->table_id) | |
7715 | || (cp->n_tables != 255 && a->table_id >= cp->n_tables)) { | |
7716 | return OFPERR_OFPBIC_BAD_TABLE_ID; | |
7717 | } | |
7718 | return 0; | |
7719 | } | |
c2d936a4 BP |
7720 | \f |
7721 | static void | |
5ad4b3f8 | 7722 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
7723 | const struct ofp_action_header *bad_action, enum ofperr error) |
7724 | { | |
7725 | if (!VLOG_DROP_WARN(&rl)) { | |
7726 | struct ds s; | |
7727 | ||
7728 | ds_init(&s); | |
5ad4b3f8 | 7729 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
7730 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
7731 | (char *)bad_action - (char *)actions, | |
7732 | ofperr_get_name(error), ds_cstr(&s)); | |
7733 | ds_destroy(&s); | |
7734 | } | |
7735 | } | |
7736 | ||
7737 | static enum ofperr | |
7738 | ofpacts_decode(const void *actions, size_t actions_len, | |
04f48a68 | 7739 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
7740 | const struct vl_mff_map *vl_mff_map, |
7741 | uint64_t *ofpacts_tlv_bitmap, struct ofpbuf *ofpacts) | |
c2d936a4 | 7742 | { |
0a2869d5 | 7743 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
7744 | while (openflow.size) { |
7745 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
7746 | enum ofp_raw_action_type raw; |
7747 | enum ofperr error; | |
7748 | uint64_t arg; | |
7749 | ||
7750 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
7751 | if (!error) { | |
04f48a68 | 7752 | error = ofpact_decode(action, raw, ofp_version, arg, vl_mff_map, |
5c7c16d8 | 7753 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
7754 | } |
7755 | ||
7756 | if (error) { | |
5ad4b3f8 | 7757 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
7758 | return error; |
7759 | } | |
7760 | } | |
c2d936a4 BP |
7761 | return 0; |
7762 | } | |
7763 | ||
7764 | static enum ofperr | |
7765 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
7766 | unsigned int actions_len, | |
7767 | enum ofp_version version, | |
7768 | uint32_t allowed_ovsinsts, | |
d824b5b7 | 7769 | struct ofpbuf *ofpacts, |
04f48a68 | 7770 | enum ofpact_type outer_action, |
5c7c16d8 YHW |
7771 | const struct vl_mff_map *vl_mff_map, |
7772 | uint64_t *ofpacts_tlv_bitmap) | |
c2d936a4 BP |
7773 | { |
7774 | const struct ofp_action_header *actions; | |
7775 | enum ofperr error; | |
7776 | ||
c2d936a4 BP |
7777 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
7778 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
7779 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
7780 | return OFPERR_OFPBRC_BAD_LEN; | |
7781 | } | |
7782 | ||
7783 | actions = ofpbuf_try_pull(openflow, actions_len); | |
7784 | if (actions == NULL) { | |
7785 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
7786 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 7787 | actions_len, openflow->size); |
c2d936a4 BP |
7788 | return OFPERR_OFPBRC_BAD_LEN; |
7789 | } | |
7790 | ||
5c7c16d8 YHW |
7791 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
7792 | ofpacts_tlv_bitmap, ofpacts); | |
20cdd1db | 7793 | if (!error) { |
4332b671 BP |
7794 | error = ofpacts_verify(ofpacts->data, ofpacts->size, version, |
7795 | allowed_ovsinsts, outer_action, NULL); | |
c2d936a4 | 7796 | } |
c2d936a4 | 7797 | if (error) { |
3ee9b38d | 7798 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
7799 | } |
7800 | return error; | |
7801 | } | |
7802 | ||
9abca1e5 BP |
7803 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
7804 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
3ee9b38d BP |
7805 | * 'ofpacts'; on failure, clears 'ofpacts'. Returns 0 if successful, otherwise |
7806 | * an OpenFlow error. | |
c2d936a4 BP |
7807 | * |
7808 | * Actions are processed according to their OpenFlow version which | |
7809 | * is provided in the 'version' parameter. | |
7810 | * | |
7811 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
7812 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
7813 | * function. | |
7814 | * | |
5c7c16d8 YHW |
7815 | * 'vl_mff_map' and 'ofpacts_tlv_bitmap' are optional. If 'vl_mff_map' is |
7816 | * provided, it is used to get variable length mf_fields with configured | |
7817 | * length in the actions. If an action uses a variable length mf_field, | |
7818 | * 'ofpacts_tlv_bitmap' is updated accordingly for ref counting. If | |
7819 | * 'vl_mff_map' is not provided, the default mf_fields with maximum length | |
7820 | * will be used. | |
7821 | * | |
c2d936a4 BP |
7822 | * The parsed actions are valid generically, but they may not be valid in a |
7823 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
7824 | * generically, but specific datapaths may only support port numbers in a | |
7825 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
7826 | * valid in a specific context. */ | |
7827 | enum ofperr | |
7828 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
7829 | unsigned int actions_len, | |
7830 | enum ofp_version version, | |
04f48a68 | 7831 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7832 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
7833 | struct ofpbuf *ofpacts) |
7834 | { | |
4332b671 BP |
7835 | return ofpacts_pull_openflow_actions__( |
7836 | openflow, actions_len, version, | |
7837 | (1u << OVSINST_OFPIT11_APPLY_ACTIONS) | (1u << OVSINST_OFPIT13_METER), | |
7838 | ofpacts, 0, vl_mff_map, ofpacts_tlv_bitmap); | |
c2d936a4 BP |
7839 | } |
7840 | \f | |
39d4382e | 7841 | /* OpenFlow 1.1 action sets. */ |
c2d936a4 | 7842 | |
39d4382e KS |
7843 | /* Append ofpact 'a' onto the tail of 'out' */ |
7844 | static void | |
7845 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) | |
7846 | { | |
7847 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); | |
7848 | } | |
c2d936a4 | 7849 | |
39d4382e KS |
7850 | /* The order in which actions in an action set get executed. This is only for |
7851 | * the actions where only the last instance added is used. */ | |
7852 | #define ACTION_SET_ORDER \ | |
7853 | SLOT(OFPACT_STRIP_VLAN) \ | |
7854 | SLOT(OFPACT_POP_MPLS) \ | |
7855 | SLOT(OFPACT_DECAP) \ | |
7856 | SLOT(OFPACT_ENCAP) \ | |
7857 | SLOT(OFPACT_PUSH_MPLS) \ | |
7858 | SLOT(OFPACT_PUSH_VLAN) \ | |
7859 | SLOT(OFPACT_DEC_TTL) \ | |
7860 | SLOT(OFPACT_DEC_MPLS_TTL) \ | |
7861 | SLOT(OFPACT_DEC_NSH_TTL) | |
7862 | ||
7863 | /* Priority for "final actions" in an action set. An action set only gets | |
7864 | * executed at all if at least one of these actions is present. If more than | |
7865 | * one is present, then only the one later in this list is executed (and if | |
7866 | * more than one of a given type, the one later in the action set). */ | |
7867 | #define ACTION_SET_FINAL_PRIORITY \ | |
7868 | FINAL(OFPACT_CT) \ | |
7869 | FINAL(OFPACT_CT_CLEAR) \ | |
7870 | FINAL(OFPACT_RESUBMIT) \ | |
7871 | FINAL(OFPACT_OUTPUT) \ | |
7872 | FINAL(OFPACT_GROUP) | |
7873 | ||
7874 | enum action_set_class { | |
7875 | /* Actions that individually can usefully appear only once in an action | |
7876 | * set. If they do appear more than once, then only the last instance is | |
7877 | * honored. */ | |
7878 | #define SLOT(OFPACT) ACTION_SLOT_##OFPACT, | |
7879 | ACTION_SET_ORDER | |
7880 | #undef SLOT | |
7881 | ||
7882 | /* Final actions. */ | |
7883 | #define FINAL(OFPACT) ACTION_SLOT_##OFPACT, | |
7884 | ACTION_SET_FINAL_PRIORITY | |
7885 | #undef FINAL | |
7886 | ||
7887 | /* Actions that can appear in an action set more than once and are executed | |
7888 | * in order. */ | |
7889 | ACTION_SLOT_SET_OR_MOVE, | |
7890 | ||
7891 | /* Actions that shouldn't appear in the action set at all. */ | |
7892 | ACTION_SLOT_INVALID | |
7893 | }; | |
7894 | ||
7895 | /* Count the action set slots. */ | |
7896 | #define SLOT(OFPACT) +1 | |
7897 | enum { N_ACTION_SLOTS = ACTION_SET_ORDER }; | |
7898 | #undef SLOT | |
7899 | ||
7900 | static enum action_set_class | |
7901 | action_set_classify(const struct ofpact *a) | |
c2d936a4 BP |
7902 | { |
7903 | switch (a->type) { | |
39d4382e KS |
7904 | #define SLOT(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; |
7905 | ACTION_SET_ORDER | |
7906 | #undef SLOT | |
7907 | ||
7908 | #define FINAL(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; | |
7909 | ACTION_SET_FINAL_PRIORITY | |
7910 | #undef FINAL | |
7911 | ||
c2d936a4 | 7912 | case OFPACT_SET_FIELD: |
1b0ee636 | 7913 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
7914 | case OFPACT_SET_ETH_DST: |
7915 | case OFPACT_SET_ETH_SRC: | |
7916 | case OFPACT_SET_IP_DSCP: | |
7917 | case OFPACT_SET_IP_ECN: | |
7918 | case OFPACT_SET_IP_TTL: | |
7919 | case OFPACT_SET_IPV4_DST: | |
7920 | case OFPACT_SET_IPV4_SRC: | |
7921 | case OFPACT_SET_L4_DST_PORT: | |
7922 | case OFPACT_SET_L4_SRC_PORT: | |
7923 | case OFPACT_SET_MPLS_LABEL: | |
7924 | case OFPACT_SET_MPLS_TC: | |
7925 | case OFPACT_SET_MPLS_TTL: | |
7926 | case OFPACT_SET_QUEUE: | |
7927 | case OFPACT_SET_TUNNEL: | |
7928 | case OFPACT_SET_VLAN_PCP: | |
7929 | case OFPACT_SET_VLAN_VID: | |
39d4382e KS |
7930 | return ACTION_SLOT_SET_OR_MOVE; |
7931 | ||
c2d936a4 BP |
7932 | case OFPACT_BUNDLE: |
7933 | case OFPACT_CLEAR_ACTIONS: | |
7ae62a67 | 7934 | case OFPACT_CLONE: |
9ac0aada | 7935 | case OFPACT_NAT: |
c2d936a4 | 7936 | case OFPACT_CONTROLLER: |
c2d936a4 BP |
7937 | case OFPACT_ENQUEUE: |
7938 | case OFPACT_EXIT: | |
e672ff9b | 7939 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
7940 | case OFPACT_FIN_TIMEOUT: |
7941 | case OFPACT_GOTO_TABLE: | |
c2d936a4 | 7942 | case OFPACT_LEARN: |
18080541 | 7943 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7944 | case OFPACT_METER: |
7945 | case OFPACT_MULTIPATH: | |
7946 | case OFPACT_NOTE: | |
c2d936a4 | 7947 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7948 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 | 7949 | case OFPACT_POP_QUEUE: |
c2d936a4 BP |
7950 | case OFPACT_SAMPLE: |
7951 | case OFPACT_STACK_POP: | |
7952 | case OFPACT_STACK_PUSH: | |
c2d936a4 BP |
7953 | case OFPACT_WRITE_ACTIONS: |
7954 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 7955 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7956 | case OFPACT_DEBUG_SLOW: |
5b34f8fc | 7957 | case OFPACT_CHECK_PKT_LARGER: |
81f71381 | 7958 | case OFPACT_DELETE_FIELD: |
39d4382e KS |
7959 | return ACTION_SLOT_INVALID; |
7960 | ||
c2d936a4 BP |
7961 | default: |
7962 | OVS_NOT_REACHED(); | |
7963 | } | |
7964 | } | |
7965 | ||
7966 | /* True if an action is allowed in the action set. | |
7967 | * False otherwise. */ | |
7968 | static bool | |
7969 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
7970 | { | |
39d4382e | 7971 | return action_set_classify(a) != ACTION_SLOT_INVALID; |
4cceacb9 JS |
7972 | } |
7973 | ||
c2d936a4 BP |
7974 | /* Reads 'action_set', which contains ofpacts accumulated by |
7975 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
7976 | * executed directly into 'action_list'. (These names correspond to the | |
7977 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
7978 | * | |
7979 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 7980 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
7981 | * specification. |
7982 | * | |
7983 | * Exceptions: | |
7984 | * + output action is only appended if no group action was present in 'in'. | |
7985 | * + As a simplification all set actions are copied in the order the are | |
7986 | * provided in 'in' as many set actions applied to a field has the same | |
7987 | * affect as only applying the last action that sets a field and | |
7988 | * duplicates are removed by do_xlate_actions(). | |
7989 | * This has an unwanted side-effect of compsoting multiple | |
7990 | * LOAD_REG actions that touch different regions of the same field. */ | |
7991 | void | |
7992 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
7993 | const struct ofpbuf *action_set) | |
f25d0cf3 | 7994 | { |
39d4382e KS |
7995 | const struct ofpact *slots[N_ACTION_SLOTS] = {NULL, }; |
7996 | ||
7997 | struct ofpbuf set_or_move; | |
7998 | ofpbuf_init(&set_or_move, 0); | |
7999 | ||
8000 | const struct ofpact *final_action = NULL; | |
8001 | enum action_set_class final_class = 0; | |
8002 | ||
8003 | const struct ofpact *cursor; | |
8004 | OFPACT_FOR_EACH (cursor, action_set->data, action_set->size) { | |
8005 | int class = action_set_classify(cursor); | |
8006 | if (class < N_ACTION_SLOTS) { | |
8007 | slots[class] = cursor; | |
8008 | } else if (class < ACTION_SLOT_SET_OR_MOVE) { | |
8009 | if (class >= final_class) { | |
8010 | final_action = cursor; | |
8011 | final_class = class; | |
8012 | } | |
8013 | } else if (class == ACTION_SLOT_SET_OR_MOVE) { | |
8014 | ofpact_copy(&set_or_move, cursor); | |
8015 | } else { | |
8016 | ovs_assert(class == ACTION_SLOT_INVALID); | |
8017 | } | |
8018 | } | |
8019 | ||
8020 | if (final_action) { | |
8021 | for (int i = 0; i < N_ACTION_SLOTS; i++) { | |
8022 | if (slots[i]) { | |
8023 | ofpact_copy(action_list, slots[i]); | |
8024 | } | |
8025 | } | |
8026 | ofpbuf_put(action_list, set_or_move.data, set_or_move.size); | |
8027 | ofpact_copy(action_list, final_action); | |
f25d0cf3 | 8028 | } |
39d4382e | 8029 | ofpbuf_uninit(&set_or_move); |
f25d0cf3 BP |
8030 | } |
8031 | ||
f25d0cf3 | 8032 | |
c2d936a4 BP |
8033 | static enum ofperr |
8034 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
8035 | size_t n_in, enum ofp_version version, | |
04f48a68 | 8036 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 8037 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 | 8038 | struct ofpbuf *out) |
c2d967a5 | 8039 | { |
c2d936a4 BP |
8040 | enum ofperr error; |
8041 | struct ofpact *a; | |
6fd6ed71 | 8042 | size_t start = out->size; |
c2d967a5 | 8043 | |
5c7c16d8 YHW |
8044 | error = ofpacts_decode(in, n_in, version, vl_mff_map, ofpacts_tlv_bitmap, |
8045 | out); | |
c2d967a5 | 8046 | |
c2d936a4 BP |
8047 | if (error) { |
8048 | return error; | |
8049 | } | |
8050 | ||
6fd6ed71 | 8051 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
8052 | if (!ofpact_is_allowed_in_actions_set(a)) { |
8053 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
8054 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
8055 | } |
8056 | } | |
c2d936a4 BP |
8057 | |
8058 | return 0; | |
c2d967a5 | 8059 | } |
c2d936a4 BP |
8060 | \f |
8061 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 8062 | |
c2d936a4 BP |
8063 | struct instruction_type_info { |
8064 | enum ovs_instruction_type type; | |
8065 | const char *name; | |
8066 | }; | |
8067 | ||
8068 | static const struct instruction_type_info inst_info[] = { | |
8069 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
8070 | OVS_INSTRUCTIONS | |
8071 | #undef DEFINE_INST | |
8072 | }; | |
8073 | ||
8074 | const char * | |
8075 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 8076 | { |
3b048d73 | 8077 | return type < ARRAY_SIZE(inst_info) ? inst_info[type].name : NULL; |
f25d0cf3 BP |
8078 | } |
8079 | ||
c2d936a4 BP |
8080 | int |
8081 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 8082 | { |
c2d936a4 BP |
8083 | const struct instruction_type_info *p; |
8084 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
8085 | if (!strcasecmp(name, p->name)) { | |
8086 | return p->type; | |
8087 | } | |
8088 | } | |
8089 | return -1; | |
29089a54 RL |
8090 | } |
8091 | ||
c2d936a4 | 8092 | enum ovs_instruction_type |
4332b671 BP |
8093 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type, |
8094 | enum ofp_version version) | |
f25d0cf3 | 8095 | { |
c2d936a4 BP |
8096 | switch (type) { |
8097 | case OFPACT_METER: | |
4332b671 BP |
8098 | return (version >= OFP15_VERSION |
8099 | ? OVSINST_OFPIT11_APPLY_ACTIONS | |
8100 | : OVSINST_OFPIT13_METER); | |
c2d936a4 BP |
8101 | case OFPACT_CLEAR_ACTIONS: |
8102 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
8103 | case OFPACT_WRITE_ACTIONS: | |
8104 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
8105 | case OFPACT_WRITE_METADATA: | |
8106 | return OVSINST_OFPIT11_WRITE_METADATA; | |
8107 | case OFPACT_GOTO_TABLE: | |
8108 | return OVSINST_OFPIT11_GOTO_TABLE; | |
8109 | case OFPACT_OUTPUT: | |
8110 | case OFPACT_GROUP: | |
7ae62a67 | 8111 | case OFPACT_CLONE: |
f25d0cf3 | 8112 | case OFPACT_CONTROLLER: |
c2d936a4 | 8113 | case OFPACT_ENQUEUE: |
f25d0cf3 | 8114 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 8115 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 | 8116 | case OFPACT_BUNDLE: |
c2d936a4 BP |
8117 | case OFPACT_SET_VLAN_VID: |
8118 | case OFPACT_SET_VLAN_PCP: | |
8119 | case OFPACT_STRIP_VLAN: | |
8120 | case OFPACT_PUSH_VLAN: | |
8121 | case OFPACT_SET_ETH_SRC: | |
8122 | case OFPACT_SET_ETH_DST: | |
8123 | case OFPACT_SET_IPV4_SRC: | |
8124 | case OFPACT_SET_IPV4_DST: | |
8125 | case OFPACT_SET_IP_DSCP: | |
8126 | case OFPACT_SET_IP_ECN: | |
8127 | case OFPACT_SET_IP_TTL: | |
8128 | case OFPACT_SET_L4_SRC_PORT: | |
8129 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 8130 | case OFPACT_REG_MOVE: |
c2d936a4 | 8131 | case OFPACT_SET_FIELD: |
bd85dac1 | 8132 | case OFPACT_STACK_PUSH: |
bd85dac1 | 8133 | case OFPACT_STACK_POP: |
f25d0cf3 | 8134 | case OFPACT_DEC_TTL: |
097d4939 | 8135 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 8136 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 8137 | case OFPACT_SET_MPLS_TTL: |
b676167a | 8138 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
8139 | case OFPACT_PUSH_MPLS: |
8140 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 8141 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
8142 | case OFPACT_SET_QUEUE: |
8143 | case OFPACT_POP_QUEUE: | |
8144 | case OFPACT_FIN_TIMEOUT: | |
8145 | case OFPACT_RESUBMIT: | |
8146 | case OFPACT_LEARN: | |
18080541 | 8147 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
8148 | case OFPACT_MULTIPATH: |
8149 | case OFPACT_NOTE: | |
8150 | case OFPACT_EXIT: | |
e672ff9b | 8151 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 8152 | case OFPACT_SAMPLE: |
d4abaff5 | 8153 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 8154 | case OFPACT_DEBUG_SLOW: |
07659514 | 8155 | case OFPACT_CT: |
72fe7578 | 8156 | case OFPACT_CT_CLEAR: |
9ac0aada | 8157 | case OFPACT_NAT: |
f839892a JS |
8158 | case OFPACT_ENCAP: |
8159 | case OFPACT_DECAP: | |
491e05c2 | 8160 | case OFPACT_DEC_NSH_TTL: |
5b34f8fc | 8161 | case OFPACT_CHECK_PKT_LARGER: |
81f71381 | 8162 | case OFPACT_DELETE_FIELD: |
c2d936a4 BP |
8163 | default: |
8164 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
8165 | } | |
8166 | } | |
8167 | ||
8168 | enum ofperr | |
8169 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
8170 | const uint16_t inst_type) | |
8171 | { | |
8172 | switch (inst_type) { | |
8173 | ||
8174 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
8175 | case ENUM: \ | |
8176 | *instruction_type = OVSINST_##ENUM; \ | |
8177 | return 0; | |
8178 | OVS_INSTRUCTIONS | |
8179 | #undef DEFINE_INST | |
8180 | ||
8181 | default: | |
8182 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
8183 | } | |
8184 | } | |
8185 | ||
8186 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
8187 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
8188 | struct ovsinst_map { | |
8189 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
8190 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
8191 | }; | |
8192 | ||
8193 | static const struct ovsinst_map * | |
8194 | get_ovsinst_map(enum ofp_version version) | |
8195 | { | |
4332b671 | 8196 | /* OpenFlow 1.1, 1.2, and 1.5 instructions. */ |
c2d936a4 BP |
8197 | static const struct ovsinst_map of11[] = { |
8198 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
8199 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
8200 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
8201 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
8202 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
8203 | { 0, -1 }, | |
8204 | }; | |
f25d0cf3 | 8205 | |
4332b671 | 8206 | /* OpenFlow 1.3 and 1.4 instructions. */ |
c2d936a4 BP |
8207 | static const struct ovsinst_map of13[] = { |
8208 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
8209 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
8210 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
8211 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
8212 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
8213 | { OVSINST_OFPIT13_METER, 6 }, | |
8214 | { 0, -1 }, | |
8215 | }; | |
4cceacb9 | 8216 | |
4332b671 | 8217 | return version == OFP13_VERSION || version == OFP14_VERSION ? of13 : of11; |
c2d936a4 | 8218 | } |
f25d0cf3 | 8219 | |
c2d936a4 BP |
8220 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
8221 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
8222 | * (OFP11_VERSION or later), and returns the result. */ | |
8223 | ovs_be32 | |
8224 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
8225 | { | |
8226 | uint32_t ofpit_bitmap = 0; | |
8227 | const struct ovsinst_map *x; | |
f25d0cf3 | 8228 | |
c2d936a4 BP |
8229 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
8230 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
8231 | ofpit_bitmap |= 1u << x->ofpit; | |
8232 | } | |
8233 | } | |
8234 | return htonl(ofpit_bitmap); | |
8235 | } | |
f25d0cf3 | 8236 | |
c2d936a4 BP |
8237 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
8238 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
8239 | * correspond to OVSINST_* values, and returns the result. */ | |
8240 | uint32_t | |
8241 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
8242 | { | |
8243 | uint32_t ovsinst_bitmap = 0; | |
8244 | const struct ovsinst_map *x; | |
f25d0cf3 | 8245 | |
c2d936a4 BP |
8246 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
8247 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
8248 | ovsinst_bitmap |= 1u << x->ovsinst; | |
8249 | } | |
8250 | } | |
8251 | return ovsinst_bitmap; | |
8252 | } | |
f25d0cf3 | 8253 | |
c2d936a4 BP |
8254 | static inline struct ofp11_instruction * |
8255 | instruction_next(const struct ofp11_instruction *inst) | |
8256 | { | |
8257 | return ((struct ofp11_instruction *) (void *) | |
8258 | ((uint8_t *) inst + ntohs(inst->len))); | |
8259 | } | |
f25d0cf3 | 8260 | |
c2d936a4 BP |
8261 | static inline bool |
8262 | instruction_is_valid(const struct ofp11_instruction *inst, | |
8263 | size_t n_instructions) | |
8264 | { | |
8265 | uint16_t len = ntohs(inst->len); | |
8266 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
8267 | && len >= sizeof *inst | |
8268 | && len / sizeof *inst <= n_instructions); | |
8269 | } | |
f25d0cf3 | 8270 | |
c2d936a4 BP |
8271 | /* This macro is careful to check for instructions with bad lengths. */ |
8272 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
8273 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
8274 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
8275 | ((LEFT) -= (ntohs((ITER)->len) \ | |
8276 | / sizeof(struct ofp11_instruction)), \ | |
8277 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 8278 | |
c2d936a4 BP |
8279 | static enum ofperr |
8280 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
8281 | enum ovs_instruction_type *type) | |
8282 | { | |
8283 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 8284 | |
c2d936a4 BP |
8285 | switch (inst->type) { |
8286 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
8287 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 8288 | |
c2d936a4 BP |
8289 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
8290 | case CONSTANT_HTONS(ENUM): \ | |
8291 | if (EXTENSIBLE \ | |
8292 | ? len >= sizeof(struct STRUCT) \ | |
8293 | : len == sizeof(struct STRUCT)) { \ | |
8294 | *type = OVSINST_##ENUM; \ | |
8295 | return 0; \ | |
8296 | } else { \ | |
8297 | return OFPERR_OFPBIC_BAD_LEN; \ | |
8298 | } | |
8299 | OVS_INSTRUCTIONS | |
8300 | #undef DEFINE_INST | |
29089a54 | 8301 | |
c2d936a4 BP |
8302 | default: |
8303 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
8304 | } |
8305 | } | |
f25d0cf3 | 8306 | |
c2d936a4 BP |
8307 | static enum ofperr |
8308 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
4332b671 | 8309 | size_t n_insts, enum ofp_version version, |
c2d936a4 | 8310 | const struct ofp11_instruction *out[]) |
f25d0cf3 | 8311 | { |
c2d936a4 BP |
8312 | const struct ofp11_instruction *inst; |
8313 | size_t left; | |
f25d0cf3 | 8314 | |
c2d936a4 BP |
8315 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
8316 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
8317 | enum ovs_instruction_type type; | |
8318 | enum ofperr error; | |
f25d0cf3 | 8319 | |
c2d936a4 BP |
8320 | error = decode_openflow11_instruction(inst, &type); |
8321 | if (error) { | |
8322 | return error; | |
8323 | } | |
f25d0cf3 | 8324 | |
4332b671 BP |
8325 | if (type == OVSINST_OFPIT13_METER && version >= OFP15_VERSION) { |
8326 | /* "meter" is an action, not an instruction, in OpenFlow 1.5. */ | |
8327 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
8328 | } | |
8329 | ||
c2d936a4 BP |
8330 | if (out[type]) { |
8331 | return OFPERR_OFPBIC_DUP_INST; | |
8332 | } | |
8333 | out[type] = inst; | |
8334 | } | |
8335 | ||
8336 | if (left) { | |
8337 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
8338 | (n_insts - left) * sizeof *inst); | |
8339 | return OFPERR_OFPBIC_BAD_LEN; | |
8340 | } | |
8341 | return 0; | |
f25d0cf3 BP |
8342 | } |
8343 | ||
8344 | static void | |
c2d936a4 BP |
8345 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
8346 | const struct ofp_action_header **actions, | |
8347 | size_t *actions_len) | |
f25d0cf3 | 8348 | { |
c2d936a4 BP |
8349 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
8350 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
8351 | } | |
f25d0cf3 | 8352 | |
c2d936a4 BP |
8353 | enum ofperr |
8354 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
8355 | unsigned int instructions_len, | |
8356 | enum ofp_version version, | |
04f48a68 | 8357 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 8358 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
8359 | struct ofpbuf *ofpacts) |
8360 | { | |
8361 | const struct ofp11_instruction *instructions; | |
8362 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
8363 | enum ofperr error; | |
f25d0cf3 | 8364 | |
9abca1e5 | 8365 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
8366 | if (version == OFP10_VERSION) { |
8367 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
8368 | version, | |
8369 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
5c7c16d8 YHW |
8370 | ofpacts, 0, vl_mff_map, |
8371 | ofpacts_tlv_bitmap); | |
c2d936a4 | 8372 | } |
f25d0cf3 | 8373 | |
c2d936a4 BP |
8374 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
8375 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
8376 | "multiple of %d", | |
8377 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
8378 | error = OFPERR_OFPBIC_BAD_LEN; | |
8379 | goto exit; | |
8380 | } | |
f25d0cf3 | 8381 | |
c2d936a4 BP |
8382 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
8383 | if (instructions == NULL) { | |
8384 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
8385 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 8386 | instructions_len, openflow->size); |
c2d936a4 BP |
8387 | error = OFPERR_OFPBIC_BAD_LEN; |
8388 | goto exit; | |
8389 | } | |
f25d0cf3 | 8390 | |
c2d936a4 | 8391 | error = decode_openflow11_instructions( |
4332b671 | 8392 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, version, |
c2d936a4 BP |
8393 | insts); |
8394 | if (error) { | |
8395 | goto exit; | |
8396 | } | |
f25d0cf3 | 8397 | |
c2d936a4 BP |
8398 | if (insts[OVSINST_OFPIT13_METER]) { |
8399 | const struct ofp13_instruction_meter *oim; | |
8400 | struct ofpact_meter *om; | |
f25d0cf3 | 8401 | |
c2d936a4 BP |
8402 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
8403 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 8404 | |
c2d936a4 BP |
8405 | om = ofpact_put_METER(ofpacts); |
8406 | om->meter_id = ntohl(oim->meter_id); | |
076caa2f | 8407 | om->provider_meter_id = UINT32_MAX; /* No provider meter ID. */ |
c2d936a4 BP |
8408 | } |
8409 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
8410 | const struct ofp_action_header *actions; | |
8411 | size_t actions_len; | |
f25d0cf3 | 8412 | |
c2d936a4 BP |
8413 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
8414 | &actions, &actions_len); | |
04f48a68 | 8415 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
5c7c16d8 | 8416 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
8417 | if (error) { |
8418 | goto exit; | |
8419 | } | |
8420 | } | |
8421 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
8422 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
8423 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
8424 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
8425 | } | |
8426 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
8427 | struct ofpact_nest *on; | |
8428 | const struct ofp_action_header *actions; | |
8429 | size_t actions_len; | |
2bd318de | 8430 | size_t start = ofpacts->size; |
255a54ea BP |
8431 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
8432 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
8433 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
8434 | &actions, &actions_len); | |
8435 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
5c7c16d8 YHW |
8436 | version, vl_mff_map, |
8437 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 BP |
8438 | if (error) { |
8439 | goto exit; | |
8440 | } | |
8441 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 8442 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
8443 | } |
8444 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
8445 | const struct ofp11_instruction_write_metadata *oiwm; | |
8446 | struct ofpact_metadata *om; | |
ca287d20 | 8447 | |
c2d936a4 BP |
8448 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
8449 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 8450 | |
c2d936a4 BP |
8451 | om = ofpact_put_WRITE_METADATA(ofpacts); |
8452 | om->metadata = oiwm->metadata; | |
8453 | om->mask = oiwm->metadata_mask; | |
8454 | } | |
8455 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
8456 | const struct ofp11_instruction_goto_table *oigt; | |
8457 | struct ofpact_goto_table *ogt; | |
7395c052 | 8458 | |
c2d936a4 BP |
8459 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
8460 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
8461 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
8462 | ogt->table_id = oigt->table_id; | |
8463 | } | |
e3f8f887 | 8464 | |
4332b671 | 8465 | error = ofpacts_verify(ofpacts->data, ofpacts->size, version, |
2e7ac3e0 | 8466 | (1u << N_OVS_INSTRUCTIONS) - 1, 0, NULL); |
c2d936a4 BP |
8467 | exit: |
8468 | if (error) { | |
8469 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 8470 | } |
c2d936a4 | 8471 | return error; |
f25d0cf3 | 8472 | } |
d01c980f | 8473 | |
c2d936a4 BP |
8474 | /* Update the length of the instruction that begins at offset 'ofs' within |
8475 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
8476 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 8477 | static void |
c2d936a4 | 8478 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 8479 | { |
c2d936a4 | 8480 | struct ofp11_instruction_actions *oia; |
d01c980f | 8481 | |
c2d936a4 | 8482 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
8483 | if (openflow->size > ofs + sizeof *oia) { |
8484 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 8485 | } else { |
6fd6ed71 | 8486 | openflow->size = ofs; |
c2d936a4 | 8487 | } |
d01c980f | 8488 | } |
c2d936a4 BP |
8489 | \f |
8490 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
8491 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
8492 | * valid, otherwise an OpenFlow error code. */ | |
8493 | enum ofperr | |
8494 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 8495 | { |
c2d936a4 BP |
8496 | switch (port) { |
8497 | case OFPP_IN_PORT: | |
8498 | case OFPP_TABLE: | |
8499 | case OFPP_NORMAL: | |
8500 | case OFPP_FLOOD: | |
8501 | case OFPP_ALL: | |
8502 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
8503 | case OFPP_LOCAL: |
8504 | return 0; | |
8505 | ||
13d2c689 BP |
8506 | case OFPP_NONE: |
8507 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
8508 | ||
c2d936a4 BP |
8509 | default: |
8510 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
8511 | return 0; | |
8512 | } | |
8513 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
8514 | } |
8515 | } | |
8516 | ||
c2d936a4 BP |
8517 | /* Removes the protocols that require consistency between match and actions |
8518 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
8519 | * | |
8520 | * (An example of an inconsistency between match and actions is a flow that | |
8521 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
8522 | * label.) */ | |
d01c980f | 8523 | static void |
c2d936a4 BP |
8524 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
8525 | { | |
8526 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
8527 | } | |
8528 | ||
f839892a JS |
8529 | /* May modify flow->packet_type, flow->dl_type, flow->nw_proto and |
8530 | * flow->vlan_tci, caller must restore them. | |
c2d936a4 BP |
8531 | * |
8532 | * Modifies some actions, filling in fields that could not be properly set | |
8533 | * without context. */ | |
8534 | static enum ofperr | |
ae6f7530 | 8535 | ofpact_check__(struct ofpact *a, struct ofpact_check_params *cp) |
d01c980f BP |
8536 | { |
8537 | switch (a->type) { | |
ae6f7530 BP |
8538 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ |
8539 | case OFPACT_##ENUM: \ | |
8540 | return check_##ENUM(ofpact_get_##ENUM(a), cp); | |
8541 | OFPACTS | |
8542 | #undef OFPACT | |
c2d936a4 BP |
8543 | default: |
8544 | OVS_NOT_REACHED(); | |
8545 | } | |
8546 | } | |
1e7db674 | 8547 | |
c2d936a4 BP |
8548 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
8549 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
8550 | * switch with no more than 'max_ports' ports. | |
8551 | * | |
8552 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
8553 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
8554 | * example of an inconsistency between match and actions is a flow that does | |
8555 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
8556 | * | |
67210a55 | 8557 | * May annotate ofpacts with information gathered from the 'match'. |
c2d936a4 | 8558 | * |
67210a55 JR |
8559 | * May temporarily modify 'match', but restores the changes before |
8560 | * returning. */ | |
c2d936a4 BP |
8561 | enum ofperr |
8562 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
ae6f7530 | 8563 | struct ofpact_check_params *cp) |
c2d936a4 | 8564 | { |
ae6f7530 BP |
8565 | /* Save fields that might temporarily be modified. */ |
8566 | struct flow *flow = &cp->match->flow; | |
8567 | ovs_be32 packet_type = flow->packet_type; | |
8568 | ovs_be16 dl_type = flow->dl_type; | |
8569 | uint8_t nw_proto = flow->nw_proto; | |
f0fb825a | 8570 | union flow_vlan_hdr vlans[FLOW_MAX_VLAN_HEADERS]; |
ae6f7530 | 8571 | memcpy(vlans, flow->vlans, sizeof vlans); |
f0fb825a | 8572 | |
ae6f7530 BP |
8573 | /* Check all the actions. */ |
8574 | cp->usable_protocols = OFPUTIL_P_ANY; | |
8575 | enum ofperr error = 0; | |
8576 | struct ofpact *a; | |
c2d936a4 | 8577 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
ae6f7530 | 8578 | error = ofpact_check__(a, cp); |
c2d936a4 | 8579 | if (error) { |
1e7db674 | 8580 | break; |
c2d936a4 BP |
8581 | } |
8582 | } | |
ae6f7530 | 8583 | |
c2d936a4 | 8584 | /* Restore fields that may have been modified. */ |
ae6f7530 BP |
8585 | flow->packet_type = packet_type; |
8586 | flow->dl_type = dl_type; | |
8587 | memcpy(flow->vlans, vlans, sizeof vlans); | |
8588 | flow->nw_proto = nw_proto; | |
8589 | ||
c2d936a4 BP |
8590 | return error; |
8591 | } | |
1e7db674 | 8592 | |
c2d936a4 BP |
8593 | /* Like ofpacts_check(), but reports inconsistencies as |
8594 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
8595 | enum ofperr | |
8596 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
ae6f7530 BP |
8597 | enum ofputil_protocol needed_protocols, |
8598 | struct ofpact_check_params *cp) | |
c2d936a4 | 8599 | { |
ae6f7530 BP |
8600 | enum ofperr error = ofpacts_check(ofpacts, ofpacts_len, cp); |
8601 | if (!error && needed_protocols & ~cp->usable_protocols) { | |
8602 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
8603 | } | |
8604 | return error; | |
c2d936a4 | 8605 | } |
097d4939 | 8606 | |
28f5311f JS |
8607 | /* Returns the destination field that 'ofpact' would write to, or NULL |
8608 | * if the action would not write to an mf_field. */ | |
8609 | const struct mf_field * | |
8610 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 8611 | { |
28f5311f JS |
8612 | if (ofpact->type == OFPACT_SET_FIELD) { |
8613 | const struct ofpact_set_field *orl; | |
8e53fe8c | 8614 | |
28f5311f | 8615 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 8616 | return orl->field; |
28f5311f JS |
8617 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
8618 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 8619 | |
28f5311f | 8620 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
8621 | return orm->dst.field; |
8622 | } | |
8623 | ||
8624 | return NULL; | |
8625 | } | |
8626 | ||
2e7ac3e0 BP |
8627 | static void OVS_PRINTF_FORMAT(2, 3) |
8628 | verify_error(char **errorp, const char *format, ...) | |
8629 | { | |
8630 | va_list args; | |
8631 | va_start(args, format); | |
8632 | char *error = xvasprintf(format, args); | |
8633 | va_end(args); | |
8634 | ||
8635 | if (errorp) { | |
8636 | *errorp = error; | |
8637 | } else { | |
8638 | VLOG_WARN("%s", error); | |
8639 | free(error); | |
8640 | } | |
8641 | } | |
8642 | ||
8e53fe8c | 8643 | static enum ofperr |
2e7ac3e0 BP |
8644 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action, |
8645 | char **errorp) | |
8e53fe8c | 8646 | { |
2e7ac3e0 BP |
8647 | verify_error(errorp, "%s action doesn't support nested action %s", |
8648 | ofpact_name(outer_action), ofpact_name(action)); | |
8e53fe8c JS |
8649 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
8650 | } | |
8651 | ||
8652 | static bool | |
8653 | field_requires_ct(enum mf_field_id field) | |
8654 | { | |
9daf2348 | 8655 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
8656 | } |
8657 | ||
8658 | /* Apply nesting constraints for actions */ | |
d824b5b7 | 8659 | static enum ofperr |
2e7ac3e0 BP |
8660 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action, |
8661 | char **errorp) | |
d824b5b7 | 8662 | { |
28f5311f | 8663 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
8664 | |
8665 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
2e7ac3e0 | 8666 | verify_error(errorp, "cannot set CT fields outside of ct action"); |
8e53fe8c JS |
8667 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
8668 | } | |
9ac0aada JR |
8669 | if (a->type == OFPACT_NAT) { |
8670 | if (outer_action != OFPACT_CT) { | |
2e7ac3e0 BP |
8671 | verify_error(errorp, |
8672 | "Cannot have NAT action outside of \"ct\" action"); | |
9ac0aada JR |
8673 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
8674 | } | |
8675 | return 0; | |
8676 | } | |
8e53fe8c JS |
8677 | |
8678 | if (outer_action) { | |
8679 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
4332b671 BP |
8680 | || outer_action == OFPACT_CT |
8681 | || outer_action == OFPACT_CLONE); | |
8e53fe8c JS |
8682 | |
8683 | if (outer_action == OFPACT_CT) { | |
8684 | if (!field) { | |
2e7ac3e0 | 8685 | return unsupported_nesting(a->type, outer_action, errorp); |
8e53fe8c | 8686 | } else if (!field_requires_ct(field->id)) { |
2e7ac3e0 BP |
8687 | verify_error(errorp, |
8688 | "%s action doesn't support nested modification " | |
8689 | "of %s", ofpact_name(outer_action), field->name); | |
8e53fe8c JS |
8690 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
8691 | } | |
8692 | } | |
4332b671 BP |
8693 | |
8694 | if (a->type == OFPACT_METER) { | |
8695 | return unsupported_nesting(a->type, outer_action, errorp); | |
8696 | } | |
d824b5b7 JS |
8697 | } |
8698 | ||
8699 | return 0; | |
8700 | } | |
8701 | ||
18080541 BP |
8702 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
8703 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
8704 | * vSwitch. | |
8705 | * | |
4332b671 BP |
8706 | * The 'version' is relevant only for error reporting: Open vSwitch enforces |
8707 | * the same rules for every version of OpenFlow, but different versions require | |
8708 | * different error codes. | |
8709 | * | |
18080541 | 8710 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate |
d824b5b7 JS |
8711 | * instructions that are allowed within 'ofpacts[]'. |
8712 | * | |
8713 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
8714 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
8715 | static enum ofperr |
8716 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
4332b671 BP |
8717 | enum ofp_version version, uint32_t allowed_ovsinsts, |
8718 | enum ofpact_type outer_action, char **errorp) | |
c2d936a4 BP |
8719 | { |
8720 | const struct ofpact *a; | |
8721 | enum ovs_instruction_type inst; | |
097d4939 | 8722 | |
c2d936a4 BP |
8723 | inst = OVSINST_OFPIT13_METER; |
8724 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8725 | enum ovs_instruction_type next; | |
8e53fe8c | 8726 | enum ofperr error; |
1e7db674 | 8727 | |
18080541 BP |
8728 | if (a->type == OFPACT_CONJUNCTION) { |
8729 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd | 8730 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
2e7ac3e0 BP |
8731 | verify_error(errorp, "\"conjunction\" actions may be used " |
8732 | "along with \"note\" but not any other kind " | |
8733 | "of action (such as the \"%s\" action used " | |
8734 | "here)", ofpact_name(a->type)); | |
18080541 BP |
8735 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
8736 | } | |
8737 | } | |
8738 | return 0; | |
8739 | } | |
8740 | ||
2e7ac3e0 | 8741 | error = ofpacts_verify_nested(a, outer_action, errorp); |
8e53fe8c JS |
8742 | if (error) { |
8743 | return error; | |
d824b5b7 JS |
8744 | } |
8745 | ||
4332b671 | 8746 | next = ovs_instruction_type_from_ofpact_type(a->type, version); |
c2d936a4 BP |
8747 | if (a > ofpacts |
8748 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
8749 | ? next < inst | |
8750 | : next <= inst)) { | |
8751 | const char *name = ovs_instruction_name_from_type(inst); | |
8752 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8753 | |
c2d936a4 | 8754 | if (next == inst) { |
2e7ac3e0 BP |
8755 | verify_error(errorp, "duplicate %s instruction not allowed, " |
8756 | "for OpenFlow 1.1+ compatibility", name); | |
c2d936a4 | 8757 | } else { |
2e7ac3e0 BP |
8758 | verify_error(errorp, "invalid instruction ordering: " |
8759 | "%s must appear before %s, " | |
8760 | "for OpenFlow 1.1+ compatibility", | |
8761 | next_name, name); | |
c2d936a4 BP |
8762 | } |
8763 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
8764 | } | |
8765 | if (!((1u << next) & allowed_ovsinsts)) { | |
8766 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8767 | |
4332b671 BP |
8768 | if (next == OVSINST_OFPIT13_METER && version >= OFP15_VERSION) { |
8769 | verify_error(errorp, "%s action not allowed here", name); | |
8770 | return OFPERR_OFPBAC_BAD_TYPE; | |
8771 | } else { | |
8772 | verify_error(errorp, "%s instruction not allowed here", name); | |
8773 | return OFPERR_OFPBIC_UNSUP_INST; | |
8774 | } | |
1e7db674 | 8775 | } |
c2d936a4 BP |
8776 | |
8777 | inst = next; | |
8778 | } | |
8779 | ||
8780 | return 0; | |
8781 | } | |
8782 | \f | |
8783 | /* Converting ofpacts to OpenFlow. */ | |
8784 | ||
8785 | static void | |
8786 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
8787 | struct ofpbuf *out) | |
8788 | { | |
8789 | switch (a->type) { | |
8790 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8791 | case OFPACT_##ENUM: \ | |
355ead69 GS |
8792 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
8793 | return; | |
c2d936a4 BP |
8794 | OFPACTS |
8795 | #undef OFPACT | |
8796 | default: | |
8797 | OVS_NOT_REACHED(); | |
1e7db674 | 8798 | } |
e3f8f887 JR |
8799 | } |
8800 | ||
8801 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
8802 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 8803 | * 'openflow'. */ |
a07c15bc | 8804 | size_t |
e3f8f887 JR |
8805 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
8806 | struct ofpbuf *openflow, | |
8807 | enum ofp_version ofp_version) | |
d01c980f BP |
8808 | { |
8809 | const struct ofpact *a; | |
6fd6ed71 | 8810 | size_t start_size = openflow->size; |
d01c980f BP |
8811 | |
8812 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 8813 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 8814 | } |
6fd6ed71 | 8815 | return openflow->size - start_size; |
d01c980f BP |
8816 | } |
8817 | ||
c2d936a4 | 8818 | static enum ovs_instruction_type |
4332b671 | 8819 | ofpact_is_apply_actions(const struct ofpact *a, enum ofp_version version) |
d01c980f | 8820 | { |
4332b671 | 8821 | return (ovs_instruction_type_from_ofpact_type(a->type, version) |
c2d936a4 | 8822 | == OVSINST_OFPIT11_APPLY_ACTIONS); |
d01c980f | 8823 | } |
8dd54666 IY |
8824 | |
8825 | void | |
e3f8f887 JR |
8826 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
8827 | size_t ofpacts_len, | |
8828 | struct ofpbuf *openflow, | |
8829 | enum ofp_version ofp_version) | |
8dd54666 | 8830 | { |
c2d936a4 | 8831 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
8832 | const struct ofpact *a; |
8833 | ||
8f2cded4 BP |
8834 | if (ofp_version == OFP10_VERSION) { |
8835 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
8836 | ofp_version); | |
8837 | return; | |
8838 | } | |
e3f8f887 | 8839 | |
c2d936a4 BP |
8840 | a = ofpacts; |
8841 | while (a < end) { | |
4332b671 | 8842 | if (ofpact_is_apply_actions(a, ofp_version)) { |
6fd6ed71 | 8843 | size_t ofs = openflow->size; |
8dd54666 IY |
8844 | |
8845 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
8846 | do { |
8847 | encode_ofpact(a, ofp_version, openflow); | |
8848 | a = ofpact_next(a); | |
4332b671 | 8849 | } while (a < end && ofpact_is_apply_actions(a, ofp_version)); |
7fdb60a7 | 8850 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
8851 | } else { |
8852 | encode_ofpact(a, ofp_version, openflow); | |
8853 | a = ofpact_next(a); | |
8dd54666 IY |
8854 | } |
8855 | } | |
8856 | } | |
d01c980f | 8857 | \f |
08d1e234 BP |
8858 | /* Sets of supported actions. */ |
8859 | ||
8860 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
8861 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
8862 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
8863 | * instance is specific to one OpenFlow version.) */ | |
8864 | struct ofpact_map { | |
8865 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
8866 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
8867 | }; | |
8868 | ||
8869 | static const struct ofpact_map * | |
8870 | get_ofpact_map(enum ofp_version version) | |
8871 | { | |
8872 | /* OpenFlow 1.0 actions. */ | |
8873 | static const struct ofpact_map of10[] = { | |
8874 | { OFPACT_OUTPUT, 0 }, | |
8875 | { OFPACT_SET_VLAN_VID, 1 }, | |
8876 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8877 | { OFPACT_STRIP_VLAN, 3 }, | |
8878 | { OFPACT_SET_ETH_SRC, 4 }, | |
8879 | { OFPACT_SET_ETH_DST, 5 }, | |
8880 | { OFPACT_SET_IPV4_SRC, 6 }, | |
8881 | { OFPACT_SET_IPV4_DST, 7 }, | |
8882 | { OFPACT_SET_IP_DSCP, 8 }, | |
8883 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8884 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8885 | { OFPACT_ENQUEUE, 11 }, | |
8886 | { 0, -1 }, | |
8887 | }; | |
8888 | ||
8889 | /* OpenFlow 1.1 actions. */ | |
8890 | static const struct ofpact_map of11[] = { | |
8891 | { OFPACT_OUTPUT, 0 }, | |
8892 | { OFPACT_SET_VLAN_VID, 1 }, | |
8893 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8894 | { OFPACT_SET_ETH_SRC, 3 }, | |
8895 | { OFPACT_SET_ETH_DST, 4 }, | |
8896 | { OFPACT_SET_IPV4_SRC, 5 }, | |
8897 | { OFPACT_SET_IPV4_DST, 6 }, | |
8898 | { OFPACT_SET_IP_DSCP, 7 }, | |
8899 | { OFPACT_SET_IP_ECN, 8 }, | |
8900 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8901 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8902 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8903 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8904 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
8905 | { OFPACT_SET_MPLS_TC, 14 }, | |
8906 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8907 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8908 | { OFPACT_PUSH_VLAN, 17 }, | |
8909 | { OFPACT_STRIP_VLAN, 18 }, | |
8910 | { OFPACT_PUSH_MPLS, 19 }, | |
8911 | { OFPACT_POP_MPLS, 20 }, | |
8912 | { OFPACT_SET_QUEUE, 21 }, | |
8913 | { OFPACT_GROUP, 22 }, | |
8914 | { OFPACT_SET_IP_TTL, 23 }, | |
8915 | { OFPACT_DEC_TTL, 24 }, | |
8916 | { 0, -1 }, | |
8917 | }; | |
8918 | ||
8919 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
8920 | static const struct ofpact_map of12[] = { | |
8921 | { OFPACT_OUTPUT, 0 }, | |
8922 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8923 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8924 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8925 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8926 | { OFPACT_PUSH_VLAN, 17 }, | |
8927 | { OFPACT_STRIP_VLAN, 18 }, | |
8928 | { OFPACT_PUSH_MPLS, 19 }, | |
8929 | { OFPACT_POP_MPLS, 20 }, | |
8930 | { OFPACT_SET_QUEUE, 21 }, | |
8931 | { OFPACT_GROUP, 22 }, | |
8932 | { OFPACT_SET_IP_TTL, 23 }, | |
8933 | { OFPACT_DEC_TTL, 24 }, | |
8934 | { OFPACT_SET_FIELD, 25 }, | |
8935 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
8936 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
8937 | { 0, -1 }, | |
8938 | }; | |
8939 | ||
8940 | switch (version) { | |
8941 | case OFP10_VERSION: | |
8942 | return of10; | |
8943 | ||
8944 | case OFP11_VERSION: | |
8945 | return of11; | |
8946 | ||
8947 | case OFP12_VERSION: | |
8948 | case OFP13_VERSION: | |
8949 | case OFP14_VERSION: | |
8950 | case OFP15_VERSION: | |
8951 | default: | |
8952 | return of12; | |
8953 | } | |
8954 | } | |
8955 | ||
8956 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
8957 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
8958 | * returns the result. */ | |
8959 | ovs_be32 | |
8960 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
8961 | { | |
8962 | uint32_t openflow_bitmap = 0; | |
8963 | const struct ofpact_map *x; | |
8964 | ||
8965 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8966 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
8967 | openflow_bitmap |= 1u << x->ofpat; | |
8968 | } | |
8969 | } | |
8970 | return htonl(openflow_bitmap); | |
8971 | } | |
8972 | ||
8973 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
8974 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
8975 | * and returns the result. */ | |
8976 | uint64_t | |
8977 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
8978 | { | |
8979 | uint64_t ofpact_bitmap = 0; | |
8980 | const struct ofpact_map *x; | |
8981 | ||
8982 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8983 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
8984 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
8985 | } | |
8986 | } | |
8987 | return ofpact_bitmap; | |
8988 | } | |
8989 | ||
8990 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
8991 | * by 'ofpacts_bitmap'. */ | |
8992 | void | |
8993 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
8994 | { | |
8995 | if (!ofpacts_bitmap) { | |
8996 | ds_put_cstr(s, "<none>"); | |
8997 | } else { | |
8998 | while (ofpacts_bitmap) { | |
8999 | ds_put_format(s, "%s ", | |
9000 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
9001 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
9002 | } | |
9003 | ds_chomp(s, ' '); | |
9004 | } | |
9005 | } | |
9006 | \f | |
f25d0cf3 BP |
9007 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
9008 | static bool | |
4e022ec0 | 9009 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
9010 | { |
9011 | switch (ofpact->type) { | |
9012 | case OFPACT_OUTPUT: | |
9013 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
9014 | case OFPACT_ENQUEUE: | |
9015 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
9016 | case OFPACT_CONTROLLER: | |
9017 | return port == OFPP_CONTROLLER; | |
9018 | ||
9019 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 9020 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 BP |
9021 | case OFPACT_BUNDLE: |
9022 | case OFPACT_SET_VLAN_VID: | |
9023 | case OFPACT_SET_VLAN_PCP: | |
9024 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 9025 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
9026 | case OFPACT_SET_ETH_SRC: |
9027 | case OFPACT_SET_ETH_DST: | |
9028 | case OFPACT_SET_IPV4_SRC: | |
9029 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 9030 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 9031 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 9032 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
9033 | case OFPACT_SET_L4_SRC_PORT: |
9034 | case OFPACT_SET_L4_DST_PORT: | |
9035 | case OFPACT_REG_MOVE: | |
b2dd70be | 9036 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
9037 | case OFPACT_STACK_PUSH: |
9038 | case OFPACT_STACK_POP: | |
f25d0cf3 | 9039 | case OFPACT_DEC_TTL: |
097d4939 JR |
9040 | case OFPACT_SET_MPLS_LABEL: |
9041 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 9042 | case OFPACT_SET_MPLS_TTL: |
b676167a | 9043 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 9044 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 9045 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
9046 | case OFPACT_SET_QUEUE: |
9047 | case OFPACT_POP_QUEUE: | |
9048 | case OFPACT_FIN_TIMEOUT: | |
9049 | case OFPACT_RESUBMIT: | |
9050 | case OFPACT_LEARN: | |
18080541 | 9051 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 9052 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
9053 | case OFPACT_NOTE: |
9054 | case OFPACT_EXIT: | |
e672ff9b | 9055 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
9056 | case OFPACT_PUSH_MPLS: |
9057 | case OFPACT_POP_MPLS: | |
29089a54 | 9058 | case OFPACT_SAMPLE: |
b19e8793 | 9059 | case OFPACT_CLEAR_ACTIONS: |
7ae62a67 | 9060 | case OFPACT_CLONE: |
7fdb60a7 | 9061 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 9062 | case OFPACT_GOTO_TABLE: |
638a19b0 | 9063 | case OFPACT_METER: |
7395c052 | 9064 | case OFPACT_GROUP: |
d4abaff5 | 9065 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 9066 | case OFPACT_DEBUG_SLOW: |
07659514 | 9067 | case OFPACT_CT: |
72fe7578 | 9068 | case OFPACT_CT_CLEAR: |
9ac0aada | 9069 | case OFPACT_NAT: |
f839892a JS |
9070 | case OFPACT_ENCAP: |
9071 | case OFPACT_DECAP: | |
491e05c2 | 9072 | case OFPACT_DEC_NSH_TTL: |
5b34f8fc | 9073 | case OFPACT_CHECK_PKT_LARGER: |
81f71381 | 9074 | case OFPACT_DELETE_FIELD: |
f25d0cf3 BP |
9075 | default: |
9076 | return false; | |
9077 | } | |
9078 | } | |
9079 | ||
9080 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
9081 | * to 'port', false otherwise. */ | |
9082 | bool | |
9083 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 9084 | ofp_port_t port) |
c2d936a4 BP |
9085 | { |
9086 | const struct ofpact *a; | |
f25d0cf3 | 9087 | |
4f20179d | 9088 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
9089 | if (ofpact_outputs_to_port(a, port)) { |
9090 | return true; | |
9091 | } | |
9092 | } | |
f25d0cf3 | 9093 | |
c2d936a4 BP |
9094 | return false; |
9095 | } | |
f25d0cf3 | 9096 | |
c2d936a4 BP |
9097 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
9098 | * to 'group', false otherwise. */ | |
9099 | bool | |
9100 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
9101 | uint32_t group_id) | |
9102 | { | |
9103 | const struct ofpact *a; | |
b02475c5 | 9104 | |
4f20179d | 9105 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
9106 | if (a->type == OFPACT_GROUP |
9107 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
9108 | return true; | |
9109 | } | |
9110 | } | |
b02475c5 | 9111 | |
c2d936a4 BP |
9112 | return false; |
9113 | } | |
8dd54666 | 9114 | |
6cc9d77c BP |
9115 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
9116 | * actions in 'b' are bytewise identical. */ | |
c2d936a4 BP |
9117 | bool |
9118 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
9119 | const struct ofpact *b, size_t b_len) | |
9120 | { | |
9121 | return a_len == b_len && !memcmp(a, b, a_len); | |
9122 | } | |
29089a54 | 9123 | |
6cc9d77c BP |
9124 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
9125 | * actions in 'b' are identical when formatted as strings. (Converting actions | |
9126 | * to string form suppresses some rarely meaningful differences, such as the | |
9127 | * 'compat' member of actions.) */ | |
9128 | bool | |
9129 | ofpacts_equal_stringwise(const struct ofpact *a, size_t a_len, | |
9130 | const struct ofpact *b, size_t b_len) | |
9131 | { | |
9132 | struct ds a_s = DS_EMPTY_INITIALIZER; | |
efefbcae BP |
9133 | struct ofpact_format_params a_fp = { .s = &a_s }; |
9134 | ofpacts_format(a, a_len, &a_fp); | |
6cc9d77c | 9135 | |
efefbcae BP |
9136 | struct ds b_s = DS_EMPTY_INITIALIZER; |
9137 | struct ofpact_format_params b_fp = { .s = &b_s }; | |
9138 | ofpacts_format(b, b_len, &b_fp); | |
6cc9d77c BP |
9139 | |
9140 | bool equal = !strcmp(ds_cstr(&a_s), ds_cstr(&b_s)); | |
9141 | ||
9142 | ds_destroy(&a_s); | |
9143 | ds_destroy(&b_s); | |
9144 | ||
9145 | return equal; | |
9146 | } | |
9147 | ||
c2d936a4 BP |
9148 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
9149 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
9150 | * | |
9151 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
9152 | * ofpacts_verify()). */ | |
9153 | uint32_t | |
9154 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
9155 | { | |
9156 | const struct ofpact *a; | |
7fdb60a7 | 9157 | |
c2d936a4 | 9158 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
9159 | if (a->type == OFPACT_METER) { |
9160 | return ofpact_get_METER(a)->meter_id; | |
4332b671 BP |
9161 | } |
9162 | ||
9163 | enum ovs_instruction_type inst | |
9164 | = ovs_instruction_type_from_ofpact_type(a->type, 0); | |
9165 | if (inst > OVSINST_OFPIT13_METER) { | |
c2d936a4 | 9166 | break; |
4cceacb9 | 9167 | } |
c2d936a4 | 9168 | } |
638a19b0 | 9169 | |
c2d936a4 BP |
9170 | return 0; |
9171 | } | |
9172 | \f | |
9173 | /* Formatting ofpacts. */ | |
7395c052 | 9174 | |
c2d936a4 | 9175 | static void |
50f96b10 | 9176 | ofpact_format(const struct ofpact *a, |
efefbcae | 9177 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
9178 | { |
9179 | switch (a->type) { | |
9180 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
9181 | case OFPACT_##ENUM: \ | |
efefbcae | 9182 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), fp); \ |
c2d936a4 BP |
9183 | break; |
9184 | OFPACTS | |
9185 | #undef OFPACT | |
9186 | default: | |
9187 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
9188 | } |
9189 | } | |
9190 | ||
9191 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
efefbcae BP |
9192 | * 'ofpacts' to 'fp->s'. If 'port_map' is nonnull, uses it to translate port |
9193 | * numbers to names in output. */ | |
f25d0cf3 BP |
9194 | void |
9195 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
efefbcae | 9196 | const struct ofpact_format_params *fp) |
f25d0cf3 | 9197 | { |
f25d0cf3 | 9198 | if (!ofpacts_len) { |
efefbcae | 9199 | ds_put_format(fp->s, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
9200 | } else { |
9201 | const struct ofpact *a; | |
9202 | ||
9203 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
9204 | if (a != ofpacts) { | |
efefbcae | 9205 | ds_put_char(fp->s, ','); |
f25d0cf3 | 9206 | } |
8dd54666 | 9207 | |
efefbcae | 9208 | ofpact_format(a, fp); |
f25d0cf3 BP |
9209 | } |
9210 | } | |
9211 | } | |
9212 | \f | |
9213 | /* Internal use by helpers. */ | |
9214 | ||
ce058104 | 9215 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
9216 | void * |
9217 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
9218 | { | |
9219 | struct ofpact *ofpact; | |
9220 | ||
6fd6ed71 PS |
9221 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
9222 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
9223 | ofpact_init(ofpact, type, len); |
9224 | return ofpact; | |
9225 | } | |
9226 | ||
ce058104 | 9227 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
9228 | void |
9229 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
9230 | { | |
9231 | memset(ofpact, 0, len); | |
9232 | ofpact->type = type; | |
c2d936a4 | 9233 | ofpact->raw = -1; |
f25d0cf3 BP |
9234 | ofpact->len = len; |
9235 | } | |
ce058104 BP |
9236 | |
9237 | /* Implementation of ofpact_finish_<ENUM>(). | |
9238 | * | |
9239 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
9240 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
9241 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
9242 | * the end of ofp-actions.h for more information. |
9243 | * | |
9244 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
9245 | * pointer to the return value of this function. */ | |
9246 | void * | |
34abaa3d | 9247 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 9248 | { |
5308056f JS |
9249 | ptrdiff_t len; |
9250 | ||
6fd6ed71 | 9251 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 9252 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 9253 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 9254 | ofpact->len = len; |
2bd318de | 9255 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
9256 | |
9257 | return ofpacts->header; | |
f25d0cf3 | 9258 | } |
c2d936a4 | 9259 | \f |
cab50449 | 9260 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 9261 | ofpact_parse(enum ofpact_type type, char *value, |
efefbcae | 9262 | const struct ofpact_parse_params *pp) |
c2d936a4 BP |
9263 | { |
9264 | switch (type) { | |
50f96b10 | 9265 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ |
c2d936a4 | 9266 | case OFPACT_##ENUM: \ |
efefbcae | 9267 | return parse_##ENUM(value, pp); |
c2d936a4 BP |
9268 | OFPACTS |
9269 | #undef OFPACT | |
9270 | default: | |
9271 | OVS_NOT_REACHED(); | |
9272 | } | |
9273 | } | |
9274 | ||
9275 | static bool | |
9276 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
9277 | { | |
9278 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
9279 | if (!strcasecmp(name, NAME)) { \ | |
9280 | *type = OFPACT_##ENUM; \ | |
9281 | return true; \ | |
9282 | } | |
9283 | OFPACTS | |
9284 | #undef OFPACT | |
9285 | ||
9286 | return false; | |
9287 | } | |
9288 | ||
9289 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
9290 | * | |
9291 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
9292 | * error. The caller is responsible for freeing the returned string. |
9293 | * | |
9294 | * If 'outer_action' is specified, indicates that the actions being parsed | |
9295 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 9296 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9297 | ofpacts_parse__(char *str, const struct ofpact_parse_params *pp, |
d824b5b7 | 9298 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 | 9299 | { |
c2d936a4 BP |
9300 | char *key, *value; |
9301 | bool drop = false; | |
9302 | char *pos; | |
9303 | ||
9304 | pos = str; | |
9305 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
c2d936a4 BP |
9306 | enum ofpact_type type; |
9307 | char *error = NULL; | |
9308 | ofp_port_t port; | |
c2d936a4 | 9309 | if (ofpact_type_from_name(key, &type)) { |
efefbcae | 9310 | error = ofpact_parse(type, value, pp); |
4332b671 BP |
9311 | |
9312 | if (type == OFPACT_METER && !allow_instructions) { | |
9313 | /* Meter is an action in OF1.5 and it's being used in a | |
9314 | * context where instructions aren't allowed. Therefore, | |
9315 | * this must be OF1.5+. */ | |
9316 | *pp->usable_protocols &= OFPUTIL_P_OF15_UP; | |
9317 | } | |
c2d936a4 | 9318 | } else if (!strcasecmp(key, "mod_vlan_vid")) { |
efefbcae | 9319 | error = parse_set_vlan_vid(value, true, pp); |
c2d936a4 | 9320 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { |
efefbcae | 9321 | error = parse_set_vlan_pcp(value, true, pp); |
c2d936a4 | 9322 | } else if (!strcasecmp(key, "set_nw_ttl")) { |
efefbcae | 9323 | error = parse_SET_IP_TTL(value, pp); |
c2d936a4 | 9324 | } else if (!strcasecmp(key, "pop_vlan")) { |
efefbcae | 9325 | error = parse_pop_vlan(pp); |
c2d936a4 | 9326 | } else if (!strcasecmp(key, "set_tunnel64")) { |
efefbcae | 9327 | error = parse_set_tunnel(value, NXAST_RAW_SET_TUNNEL64, pp); |
7eb4b1f1 | 9328 | } else if (!strcasecmp(key, "load")) { |
efefbcae | 9329 | error = parse_reg_load(value, pp); |
c2d936a4 | 9330 | } else if (!strcasecmp(key, "bundle_load")) { |
efefbcae | 9331 | error = parse_bundle_load(value, pp); |
c2d936a4 BP |
9332 | } else if (!strcasecmp(key, "drop")) { |
9333 | drop = true; | |
9334 | } else if (!strcasecmp(key, "apply_actions")) { | |
9335 | return xstrdup("apply_actions is the default instruction"); | |
efefbcae BP |
9336 | } else if (ofputil_port_from_string(key, pp->port_map, &port)) { |
9337 | ofpact_put_OUTPUT(pp->ofpacts)->port = port; | |
c2d936a4 BP |
9338 | } else { |
9339 | return xasprintf("unknown action %s", key); | |
9340 | } | |
9341 | if (error) { | |
9342 | return error; | |
9343 | } | |
c2d936a4 | 9344 | } |
c2d936a4 | 9345 | |
efefbcae | 9346 | if (drop && pp->ofpacts->size) { |
c2d936a4 BP |
9347 | return xstrdup("\"drop\" must not be accompanied by any other action " |
9348 | "or instruction"); | |
9349 | } | |
9350 | ||
2e7ac3e0 | 9351 | char *error = NULL; |
4332b671 | 9352 | ofpacts_verify(pp->ofpacts->data, pp->ofpacts->size, OFP11_VERSION, |
2e7ac3e0 BP |
9353 | (allow_instructions |
9354 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
9355 | : ((1u << OVSINST_OFPIT11_APPLY_ACTIONS) | |
9356 | | (1u << OVSINST_OFPIT13_METER))), | |
9357 | outer_action, &error); | |
9358 | if (error) { | |
9359 | return error; | |
c2d936a4 BP |
9360 | } |
9361 | ||
9362 | return NULL; | |
9363 | } | |
9364 | ||
cab50449 | 9365 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9366 | ofpacts_parse(char *str, const struct ofpact_parse_params *pp, |
50f96b10 | 9367 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 | 9368 | { |
1f886f07 YS |
9369 | if (pp->depth >= MAX_OFPACT_PARSE_DEPTH) { |
9370 | return xstrdup("Action nested too deeply"); | |
9371 | } | |
9372 | CONST_CAST(struct ofpact_parse_params *, pp)->depth++; | |
efefbcae BP |
9373 | uint32_t orig_size = pp->ofpacts->size; |
9374 | char *error = ofpacts_parse__(str, pp, allow_instructions, outer_action); | |
c2d936a4 | 9375 | if (error) { |
efefbcae | 9376 | pp->ofpacts->size = orig_size; |
c2d936a4 | 9377 | } |
1f886f07 | 9378 | CONST_CAST(struct ofpact_parse_params *, pp)->depth--; |
c2d936a4 BP |
9379 | return error; |
9380 | } | |
9381 | ||
cab50449 | 9382 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9383 | ofpacts_parse_copy(const char *s_, const struct ofpact_parse_params *pp, |
d824b5b7 | 9384 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
9385 | { |
9386 | char *error, *s; | |
9387 | ||
efefbcae | 9388 | *pp->usable_protocols = OFPUTIL_P_ANY; |
c2d936a4 BP |
9389 | |
9390 | s = xstrdup(s_); | |
efefbcae | 9391 | error = ofpacts_parse(s, pp, allow_instructions, outer_action); |
c2d936a4 BP |
9392 | free(s); |
9393 | ||
9394 | return error; | |
9395 | } | |
9396 | ||
9397 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
9398 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
9399 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
9400 | * |
9401 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
9402 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 9403 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9404 | ofpacts_parse_actions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 9405 | { |
efefbcae | 9406 | return ofpacts_parse_copy(s, pp, false, 0); |
c2d936a4 BP |
9407 | } |
9408 | ||
9409 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
9410 | * 'ofpacts'. | |
9411 | * | |
9412 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
9413 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 9414 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9415 | ofpacts_parse_instructions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 9416 | { |
efefbcae | 9417 | return ofpacts_parse_copy(s, pp, true, 0); |
c2d936a4 | 9418 | } |
08d1e234 BP |
9419 | |
9420 | const char * | |
9421 | ofpact_name(enum ofpact_type type) | |
9422 | { | |
9423 | switch (type) { | |
9424 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
9425 | OFPACTS | |
9426 | #undef OFPACT | |
9427 | } | |
9428 | return "<unknown>"; | |
9429 | } | |
c2d936a4 BP |
9430 | \f |
9431 | /* Low-level action decoding and encoding functions. */ | |
9432 | ||
9433 | /* Everything needed to identify a particular OpenFlow action. */ | |
9434 | struct ofpact_hdrs { | |
9435 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
9436 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
9437 | uint8_t ofp_version; /* From ofp_header. */ | |
9438 | }; | |
9439 | ||
9440 | /* Information about a particular OpenFlow action. */ | |
9441 | struct ofpact_raw_instance { | |
9442 | /* The action's identity. */ | |
9443 | struct ofpact_hdrs hdrs; | |
9444 | enum ofp_raw_action_type raw; | |
9445 | ||
9446 | /* Looking up the action. */ | |
9447 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
9448 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
9449 | ||
9450 | /* The action's encoded size. | |
9451 | * | |
9452 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
9453 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
9454 | * OFP_ACTION_ALIGN) == 65528. */ | |
9455 | unsigned short int min_length; | |
9456 | unsigned short int max_length; | |
9457 | ||
9458 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
9459 | * offset of that argument from the beginning of the action and 'arg_len' | |
9460 | * its length, both in bytes. | |
9461 | * | |
9462 | * For actions that take other forms, these are both zero. */ | |
9463 | unsigned short int arg_ofs; | |
9464 | unsigned short int arg_len; | |
9465 | ||
9466 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
9467 | const char *name; | |
9468 | ||
9469 | /* If this action is deprecated, a human-readable string with a brief | |
9470 | * explanation. */ | |
9471 | const char *deprecation; | |
9472 | }; | |
9473 | ||
9474 | /* Action header. */ | |
9475 | struct ofp_action_header { | |
9476 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
9477 | * version (see enum ofp_raw_action_type). | |
9478 | * | |
9479 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
9480 | * designates an OpenFlow vendor ID and that the remainder of the action | |
9481 | * structure has a vendor-defined meaning. | |
9482 | */ | |
9483 | #define OFPAT_VENDOR 0xffff | |
9484 | ovs_be16 type; | |
9485 | ||
9486 | /* Always a multiple of 8. */ | |
9487 | ovs_be16 len; | |
9488 | ||
9489 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
9490 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
9491 | ovs_be32 vendor; | |
9492 | }; | |
9493 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
9494 | ||
c2d936a4 BP |
9495 | static bool |
9496 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
9497 | const struct ofpact_hdrs *b) | |
9498 | { | |
9499 | return (a->vendor == b->vendor | |
9500 | && a->type == b->type | |
9501 | && a->ofp_version == b->ofp_version); | |
9502 | } | |
9503 | ||
9504 | static uint32_t | |
9505 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
9506 | { | |
a02f9a62 BP |
9507 | return hash_2words(hdrs->vendor, |
9508 | ((uint32_t) hdrs->type << 16) | hdrs->ofp_version); | |
c2d936a4 BP |
9509 | } |
9510 | ||
9511 | #include "ofp-actions.inc2" | |
9512 | ||
9513 | static struct hmap * | |
9514 | ofpact_decode_hmap(void) | |
9515 | { | |
9516 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
9517 | static struct hmap hmap; | |
9518 | ||
9519 | if (ovsthread_once_start(&once)) { | |
9520 | struct ofpact_raw_instance *inst; | |
9521 | ||
9522 | hmap_init(&hmap); | |
9523 | for (inst = all_raw_instances; | |
9524 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
9525 | inst++) { | |
9526 | hmap_insert(&hmap, &inst->decode_node, | |
9527 | ofpact_hdrs_hash(&inst->hdrs)); | |
9528 | } | |
9529 | ovsthread_once_done(&once); | |
9530 | } | |
9531 | return &hmap; | |
9532 | } | |
9533 | ||
9534 | static struct hmap * | |
9535 | ofpact_encode_hmap(void) | |
9536 | { | |
9537 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
9538 | static struct hmap hmap; | |
9539 | ||
9540 | if (ovsthread_once_start(&once)) { | |
9541 | struct ofpact_raw_instance *inst; | |
9542 | ||
9543 | hmap_init(&hmap); | |
9544 | for (inst = all_raw_instances; | |
9545 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
9546 | inst++) { | |
9547 | hmap_insert(&hmap, &inst->encode_node, | |
9548 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
9549 | } | |
9550 | ovsthread_once_done(&once); | |
9551 | } | |
9552 | return &hmap; | |
9553 | } | |
9554 | ||
9555 | static enum ofperr | |
9556 | ofpact_decode_raw(enum ofp_version ofp_version, | |
9557 | const struct ofp_action_header *oah, size_t length, | |
9558 | const struct ofpact_raw_instance **instp) | |
9559 | { | |
9560 | const struct ofpact_raw_instance *inst; | |
9561 | struct ofpact_hdrs hdrs; | |
9562 | ||
9563 | *instp = NULL; | |
9564 | if (length < sizeof *oah) { | |
9565 | return OFPERR_OFPBAC_BAD_LEN; | |
9566 | } | |
9567 | ||
9568 | /* Get base action type. */ | |
9569 | if (oah->type == htons(OFPAT_VENDOR)) { | |
9570 | /* Get vendor. */ | |
9571 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
9572 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
9573 | /* Get extension subtype. */ | |
9574 | const struct ext_action_header *nah; | |
c2d936a4 | 9575 | |
232c1e12 | 9576 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
9577 | if (length < sizeof *nah) { |
9578 | return OFPERR_OFPBAC_BAD_LEN; | |
9579 | } | |
9580 | hdrs.type = ntohs(nah->subtype); | |
9581 | } else { | |
9582 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
9583 | hdrs.vendor); | |
9584 | return OFPERR_OFPBAC_BAD_VENDOR; | |
9585 | } | |
9586 | } else { | |
9587 | hdrs.vendor = 0; | |
9588 | hdrs.type = ntohs(oah->type); | |
9589 | } | |
9590 | ||
9591 | hdrs.ofp_version = ofp_version; | |
9592 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
9593 | ofpact_decode_hmap()) { | |
9594 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
9595 | *instp = inst; | |
9596 | return 0; | |
9597 | } | |
9598 | } | |
9599 | ||
77b7d232 BP |
9600 | VLOG_WARN_RL(&rl, "unknown %s action for vendor %#"PRIx32" and " |
9601 | "type %"PRIu16, ofputil_version_to_string(ofp_version), | |
9602 | hdrs.vendor, hdrs.type); | |
c2d936a4 BP |
9603 | return (hdrs.vendor |
9604 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
9605 | : OFPERR_OFPBAC_BAD_TYPE); | |
9606 | } | |
9607 | ||
9608 | static enum ofperr | |
9609 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9610 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
9611 | { | |
6fd6ed71 | 9612 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
9613 | const struct ofpact_raw_instance *action; |
9614 | unsigned int length; | |
9615 | enum ofperr error; | |
9616 | ||
9617 | *raw = *arg = 0; | |
6fd6ed71 | 9618 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
9619 | if (error) { |
9620 | return error; | |
9621 | } | |
9622 | ||
9623 | if (action->deprecation) { | |
9624 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
9625 | action->name, ofputil_version_to_string(ofp_version), | |
9626 | action->deprecation); | |
9627 | } | |
9628 | ||
9629 | length = ntohs(oah->len); | |
6fd6ed71 | 9630 | if (length > buf->size) { |
b153b990 | 9631 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 9632 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
9633 | return OFPERR_OFPBAC_BAD_LEN; |
9634 | } | |
c2d936a4 BP |
9635 | if (length < action->min_length || length > action->max_length) { |
9636 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
9637 | "[%hu,%hu]", action->name, length, | |
9638 | action->min_length, action->max_length); | |
9639 | return OFPERR_OFPBAC_BAD_LEN; | |
9640 | } | |
9641 | if (length % 8) { | |
9642 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
9643 | "of 8", action->name, length); | |
9644 | return OFPERR_OFPBAC_BAD_LEN; | |
9645 | } | |
9646 | ||
9647 | *raw = action->raw; | |
9648 | *arg = 0; | |
9649 | if (action->arg_len) { | |
9650 | const uint8_t *p; | |
9651 | int i; | |
9652 | ||
9653 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
9654 | for (i = 0; i < action->arg_len; i++) { | |
9655 | *arg = (*arg << 8) | p[i]; | |
9656 | } | |
9657 | } | |
9658 | ||
9659 | ofpbuf_pull(buf, length); | |
9660 | ||
9661 | return 0; | |
9662 | } | |
9663 | ||
9664 | static const struct ofpact_raw_instance * | |
9665 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
9666 | { | |
9667 | const struct ofpact_raw_instance *inst; | |
9668 | ||
9669 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
9670 | ofpact_encode_hmap()) { | |
9671 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
9672 | return inst; | |
9673 | } | |
9674 | } | |
9675 | OVS_NOT_REACHED(); | |
9676 | } | |
9677 | ||
9678 | static void * | |
9679 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9680 | enum ofp_raw_action_type raw, uint64_t arg) | |
9681 | { | |
9682 | const struct ofpact_raw_instance *inst; | |
9683 | struct ofp_action_header *oah; | |
9684 | const struct ofpact_hdrs *hdrs; | |
9685 | ||
9686 | inst = ofpact_raw_lookup(ofp_version, raw); | |
9687 | hdrs = &inst->hdrs; | |
9688 | ||
9689 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
9690 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
9691 | oah->len = htons(inst->min_length); | |
9692 | oah->vendor = htonl(hdrs->vendor); | |
9693 | ||
9694 | switch (hdrs->vendor) { | |
9695 | case 0: | |
9696 | break; | |
9697 | ||
232c1e12 BP |
9698 | case NX_VENDOR_ID: |
9699 | case ONF_VENDOR_ID: { | |
9700 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
9701 | nah->subtype = htons(hdrs->type); |
9702 | break; | |
9703 | } | |
9704 | ||
9705 | default: | |
9706 | OVS_NOT_REACHED(); | |
9707 | } | |
9708 | ||
9709 | if (inst->arg_len) { | |
9710 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
9711 | int i; | |
9712 | ||
9713 | for (i = 0; i < inst->arg_len; i++) { | |
9714 | *--p = arg; | |
9715 | arg >>= 8; | |
9716 | } | |
9717 | } else { | |
9718 | ovs_assert(!arg); | |
9719 | } | |
9720 | ||
9721 | return oah; | |
9722 | } | |
178742f9 BP |
9723 | |
9724 | static void | |
9725 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
9726 | { | |
9727 | struct ofp_action_header *oah; | |
9728 | ||
9ac0aada JR |
9729 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
9730 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
9731 | |
9732 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 9733 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
9734 | } |
9735 |